diff --git a/config/GMPE01_00/splits.txt b/config/GMPE01_00/splits.txt
index 7e961f99..d864a28b 100644
--- a/config/GMPE01_00/splits.txt
+++ b/config/GMPE01_00/splits.txt
@@ -13,6 +13,15 @@ Sections:
 	.sdata2     type:rodata
 	.sbss2      type:bss
 
+game/malloc.c:
+	.text       start:0x8000A558 end:0x8000A938
+	.data       start:0x80121F50 end:0x80121FC8
+	.bss        start:0x80145A80 end:0x80145A98
+
+game/memory.c:
+	.text       start:0x8000A938 end:0x8000AEF0
+	.data       start:0x80121FC8 end:0x80122140
+
 Runtime.PPCEABI.H/global_destructor_chain.c:
 	.text       start:0x800E2008 end:0x800E2068
 	.dtors      start:0x8011DCE8 end:0x8011DCEC
diff --git a/config/GMPE01_00/symbols.txt b/config/GMPE01_00/symbols.txt
index 7aeba886..7b255f4e 100644
--- a/config/GMPE01_00/symbols.txt
+++ b/config/GMPE01_00/symbols.txt
@@ -101,29 +101,29 @@ fn_8000A1A4 = .text:0x8000A1A4; // type:function size:0x6C
 fn_8000A210 = .text:0x8000A210; // type:function size:0x254
 fn_8000A464 = .text:0x8000A464; // type:function size:0x74
 fn_8000A4D8 = .text:0x8000A4D8; // type:function size:0x80
-fn_8000A558 = .text:0x8000A558; // type:function size:0x12C
-fn_8000A684 = .text:0x8000A684; // type:function size:0x30
-fn_8000A6B4 = .text:0x8000A6B4; // type:function size:0x2C
-fn_8000A6E0 = .text:0x8000A6E0; // type:function size:0x54
-fn_8000A734 = .text:0x8000A734; // type:function size:0x64
-fn_8000A798 = .text:0x8000A798; // type:function size:0x6C
-fn_8000A804 = .text:0x8000A804; // type:function size:0x38
-fn_8000A83C = .text:0x8000A83C; // type:function size:0x54
-fn_8000A890 = .text:0x8000A890; // type:function size:0x3C
-fn_8000A8CC = .text:0x8000A8CC; // type:function size:0x3C
-fn_8000A908 = .text:0x8000A908; // type:function size:0x18
-fn_8000A920 = .text:0x8000A920; // type:function size:0x18
-fn_8000A938 = .text:0x8000A938; // type:function size:0x4C
-fn_8000A984 = .text:0x8000A984; // type:function size:0x40
-fn_8000A9C4 = .text:0x8000A9C4; // type:function size:0x3C
-fn_8000AA00 = .text:0x8000AA00; // type:function size:0x108
-fn_8000AB08 = .text:0x8000AB08; // type:function size:0x7C
-fn_8000AB84 = .text:0x8000AB84; // type:function size:0x12C
-fn_8000ACB0 = .text:0x8000ACB0; // type:function size:0x48
-fn_8000ACF8 = .text:0x8000ACF8; // type:function size:0x44
-fn_8000AD3C = .text:0x8000AD3C; // type:function size:0xC
-fn_8000AD48 = .text:0x8000AD48; // type:function size:0x158
-fn_8000AEA0 = .text:0x8000AEA0; // type:function size:0x50
+HuMemInitAll = .text:0x8000A558; // type:function size:0x12C
+HuMemInit = .text:0x8000A684; // type:function size:0x30
+HuMemDCFlushAll = .text:0x8000A6B4; // type:function size:0x2C
+HuMemDCFlush = .text:0x8000A6E0; // type:function size:0x54
+HuMemDirectMalloc = .text:0x8000A734; // type:function size:0x64
+HuMemDirectMallocNum = .text:0x8000A798; // type:function size:0x6C
+HuMemDirectFree = .text:0x8000A804; // type:function size:0x38
+HuMemDirectFreeNum = .text:0x8000A83C; // type:function size:0x54
+HuMemUsedMallocSizeGet = .text:0x8000A890; // type:function size:0x3C
+HuMemUsedMallocBlockGet = .text:0x8000A8CC; // type:function size:0x3C
+HuMemHeapSizeGet = .text:0x8000A908; // type:function size:0x18
+HuMemHeapPtrGet = .text:0x8000A920; // type:function size:0x18
+HuMemHeapInit = .text:0x8000A938; // type:function size:0x4C
+HuMemMemoryAllocNum = .text:0x8000A984; // type:function size:0x40
+HuMemMemoryAlloc = .text:0x8000A9C4; // type:function size:0x3C
+HuMemMemoryAlloc2 = .text:0x8000AA00; // type:function size:0x108 scope:local
+HuMemMemoryFreeNum = .text:0x8000AB08; // type:function size:0x7C
+HuMemMemoryFree = .text:0x8000AB84; // type:function size:0x12C
+HuMemUsedMemorySizeGet = .text:0x8000ACB0; // type:function size:0x48
+HuMemUsedMemoryBlockGet = .text:0x8000ACF8; // type:function size:0x44
+HuMemMemoryAllocSizeGet = .text:0x8000AD3C; // type:function size:0xC
+HuMemHeapDump = .text:0x8000AD48; // type:function size:0x158
+HuMemMemorySizeGet = .text:0x8000AEA0; // type:function size:0x50
 fn_8000AEF0 = .text:0x8000AEF0; // type:function size:0x64
 fn_8000AF54 = .text:0x8000AF54; // type:function size:0xA0
 fn_8000AFF4 = .text:0x8000AFF4; // type:function size:0x15C
@@ -2053,13 +2053,13 @@ OSCancelAlarm = .text:0x800B5008; // type:function size:0x11C
 DecrementerExceptionCallback = .text:0x800B5124; // type:function size:0x230 scope:local
 DecrementerExceptionHandler = .text:0x800B5354; // type:function size:0x50 scope:local
 fn_800B53A4 = .text:0x800B53A4; // type:function size:0xAC
-fn_800B5450 = .text:0x800B5450; // type:function size:0xFC
+OSAllocFromHeap = .text:0x800B5450; // type:function size:0xFC
 fn_800B554C = .text:0x800B554C; // type:function size:0x284
 fn_800B57D0 = .text:0x800B57D0; // type:function size:0x7C
 OSSetCurrentHeap = .text:0x800B584C; // type:function size:0x10
 OSInitAlloc = .text:0x800B585C; // type:function size:0x70
 OSCreateHeap = .text:0x800B58CC; // type:function size:0x6C
-fn_800B5938 = .text:0x800B5938; // type:function size:0x360
+OSCheckHeap = .text:0x800B5938; // type:function size:0x360
 fn_800B5C98 = .text:0x800B5C98; // type:function size:0x104
 OSGetArenaHi = .text:0x800B5D9C; // type:function size:0x8 scope:global
 OSGetArenaLo = .text:0x800B5DA4; // type:function size:0x8 scope:global
@@ -4840,10 +4840,10 @@ lbl_8011FCBE = .data:0x8011FCBE; // type:object size:0x122
 lbl_8011FDE0 = .data:0x8011FDE0; // type:object size:0x20
 lbl_8011FE00 = .data:0x8011FE00; // type:object size:0x2000
 lbl_80121E00 = .data:0x80121E00; // type:object size:0x150
-lbl_80121F50 = .data:0x80121F50; // type:object size:0x78
+HeapSizeTbl = .data:0x80121F50; // type:object size:0x78 scope:local
 lbl_80121FC8 = .data:0x80121FC8; // type:object size:0x50
 lbl_80122018 = .data:0x80122018; // type:object size:0x128
-fcoltbl = .data:0x80122140; // type:object size:0x40
+fcoltbl = .data:0x80122140; // type:object size:0x40 align:32
 lbl_80122180 = .data:0x80122180; // type:object size:0x1F data:string
 lbl_8012219F = .data:0x8012219F; // type:object size:0x31
 lbl_801221D0 = .data:0x801221D0; // type:object size:0x12
@@ -5356,7 +5356,7 @@ RumbleData = .bss:0x80142810; // type:object size:0x30
 ReadDataStat = .bss:0x80142840; // type:object size:0x2E00 data:4byte
 TextBuffer = .bss:0x80145640; // type:object size:0x400
 lbl_80145A40 = .bss:0x80145A40; // type:object size:0x40
-lbl_80145A80 = .bss:0x80145A80; // type:object size:0x18
+HeapTbl = .bss:0x80145A80; // type:object size:0x14 scope:local
 lbl_80145A98 = .bss:0x80145A98; // type:object size:0x6800
 lbl_8014C298 = .bss:0x8014C298; // type:object size:0x100 data:byte
 lbl_8014C398 = .bss:0x8014C398; // type:object size:0xF8
@@ -5840,7 +5840,7 @@ lbl_801D38B0 = .sdata:0x801D38B0; // type:object size:0x2 data:2byte
 lbl_801D38B2 = .sdata:0x801D38B2; // type:object size:0x2 data:2byte
 lbl_801D38B4 = .sdata:0x801D38B4; // type:object size:0x2 data:2byte
 lbl_801D38B6 = .sdata:0x801D38B6; // type:object size:0x2 data:2byte
-lbl_801D38B8 = .sdata:0x801D38B8; // type:object size:0x8 data:4byte
+__OSCurrHeap = .sdata:0x801D38B8; // type:object size:0x8 data:4byte
 __OSArenaLo = .sdata:0x801D38C0; // type:object size:0x4 scope:local data:4byte
 @32 = .sdata:0x801D38C8; // type:object size:0x2 scope:local data:string
 lbl_801D38D0 = .sdata:0x801D38D0; // type:object size:0x8 data:2byte
@@ -5952,7 +5952,7 @@ lbl_801D3B0C = .sbss:0x801D3B0C; // type:object size:0x4 data:4byte
 lbl_801D3B10 = .sbss:0x801D3B10; // type:object size:0x4 data:4byte
 lbl_801D3B14 = .sbss:0x801D3B14; // type:object size:0x4 data:4byte
 lbl_801D3B18 = .sbss:0x801D3B18; // type:object size:0x4 data:4byte
-lbl_801D3B1C = .sbss:0x801D3B1C; // type:object size:0x4 data:4byte
+currentHeapHandle = .sbss:0x801D3B1C; // type:object size:0x4 data:4byte
 lbl_801D3B20 = .sbss:0x801D3B20; // type:object size:0x8 data:4byte
 lbl_801D3B28 = .sbss:0x801D3B28; // type:object size:0x4 data:4byte
 lbl_801D3B2C = .sbss:0x801D3B2C; // type:object size:0x2 data:2byte
diff --git a/configure.py b/configure.py
index 74dfe46a..c86dab57 100755
--- a/configure.py
+++ b/configure.py
@@ -177,6 +177,12 @@ cflags_rel = [
     "-sdata2 0",
 ]
 
+# Game flags
+cflags_game = [
+    *cflags_base,
+    "-O0,p",
+]
+
 config.linker_version = "GC/2.6"
 config.rel_strip_partial = False
 config.rel_empty_file = "REL/empty.c"
@@ -210,6 +216,16 @@ NonMatching = False
 config.warn_missing_config = True
 config.warn_missing_source = False
 config.libs = [
+    {
+        "lib": "Game",
+        "mw_version": config.linker_version,
+        "cflags": cflags_game,
+        "host": False,
+        "objects": [
+            Object(Matching, "game/malloc.c"),
+            Object(Matching, "game/memory.c"),
+        ],
+    },
     {
         "lib": "Runtime.PPCEABI.H",
         "mw_version": config.linker_version,
diff --git a/include/functions.h b/include/functions.h
index 6d8168d0..29afc607 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -5,6 +5,9 @@
 #include "common_structs.h"
 
 void OSReport(const char * format, ...);
+void* OSAllocFromHeap(int heap, u32 size);
+s32 OSCheckHeap(int heap);
+void DCFlushRangeNoSync(void *addr, u32 size);
 void* HuPrcCreate(void (*), s32, s32, s32);
 void Hu3DBGColorSet(u8, u8, u8);
 void Hu3DCameraCreate(s16);
@@ -18,4 +21,30 @@ void fn_80045F74(s16, s32);
 s32 fn_800578E4(void);
 void fn_1_26C(void);
 
+
+void HuMemInitAll(void);
+void *HuMemInit(void *ptr, s32 size);
+void HuMemDCFlushAll();
+void HuMemDCFlush(int heap);
+void *HuMemDirectMalloc(int heap, s32 size);
+void *HuMemDirectMallocNum(int heap, s32 size, u32 num);
+void HuMemDirectFree(void *ptr);
+void HuMemDirectFreeNum(int heap, u32 num);
+s32 HuMemUsedMallocSizeGet(int heap);
+s32 HuMemUsedMallocBlockGet(int heap);
+u32 HuMemHeapSizeGet(int heap);
+void *HuMemHeapPtrGet(int heap);
+
+void *HuMemHeapInit(void *ptr, s32 size);
+void *HuMemMemoryAlloc(void *heap_ptr, s32 size, u32 retaddr);
+void *HuMemMemoryAllocNum(void *heap_ptr, s32 size, u32 num, u32 retaddr);
+void HuMemMemoryFree(void *ptr, u32 retaddr);
+void HuMemMemoryFreeNum(void *heap_ptr, u32 num, u32 retaddr);
+s32 HuMemUsedMemorySizeGet(void *heap_ptr);
+s32 HuMemUsedMemoryBlockGet(void *heap_ptr);
+s32 HuMemMemoryAllocSizeGet(s32 size);
+void HuMemHeapDump(void *heap_ptr, s16 status);
+
+
+
 #endif
\ No newline at end of file
diff --git a/include/types.h b/include/types.h
index 71c28167..388ebfcc 100644
--- a/include/types.h
+++ b/include/types.h
@@ -1,6 +1,7 @@
 #ifndef _TYPES_H_
 #define _TYPES_H_
 
+#define NULL ((void *)0)
 typedef unsigned char u8;
 typedef unsigned short u16;
 typedef unsigned long u32;
diff --git a/src/game/malloc.c b/src/game/malloc.c
new file mode 100644
index 00000000..08910376
--- /dev/null
+++ b/src/game/malloc.c
@@ -0,0 +1,105 @@
+#include "common.h"
+
+extern int __OSCurrHeap;
+extern int currentHeapHandle;
+
+static u32 HeapSizeTbl[5] = { 0x240000, 0x140000, 0xA80000, 0x580000, 0 };
+static void *HeapTbl[5];
+
+void HuMemInitAll(void)
+{
+    int i;
+    void *ptr;
+    u32 free_size;
+    for(i=0; i<4; i++) {
+        ptr = OSAllocFromHeap(__OSCurrHeap, HeapSizeTbl[i]);
+        if(ptr == NULL) {
+            OSReport("HuMem> Failed OSAlloc Size:%d\n", HeapSizeTbl[i]);
+            return;
+        }
+        HeapTbl[i] = HuMemInit(ptr, HeapSizeTbl[i]);
+    }
+    free_size = OSCheckHeap(currentHeapHandle);
+    OSReport("HuMem> left memory space %dKB(%d)\n", free_size/1024, free_size);
+    ptr = OSAllocFromHeap(__OSCurrHeap, free_size);
+    if(ptr == NULL) {
+        OSReport("HuMem> Failed OSAlloc left space\n");
+        return;
+    }
+    HeapTbl[4] = HuMemInit(ptr, free_size);
+    HeapSizeTbl[4] = free_size;
+}
+
+void *HuMemInit(void *ptr, s32 size)
+{
+    return HuMemHeapInit(ptr, size);
+}
+
+void HuMemDCFlushAll()
+{
+    HuMemDCFlush(2);
+    HuMemDCFlush(0);
+}
+
+void HuMemDCFlush(int heap)
+{
+    DCFlushRangeNoSync(HeapTbl[heap], HeapSizeTbl[heap]);
+}
+
+void *HuMemDirectMalloc(int heap, s32 size)
+{
+    register u32 retaddr;
+    asm {
+        mflr retaddr
+    }
+    size = (size+31) & 0xFFFFFFE0;
+    return HuMemMemoryAlloc(HeapTbl[heap], size, retaddr);
+}
+
+void *HuMemDirectMallocNum(int heap, s32 size, u32 num)
+{
+    register u32 retaddr;
+    asm {
+        mflr retaddr
+    }
+    size = (size+31) & 0xFFFFFFE0;
+    return HuMemMemoryAllocNum(HeapTbl[heap], size, num, retaddr);
+}
+
+void HuMemDirectFree(void *ptr)
+{
+    register u32 retaddr;
+    asm {
+        mflr retaddr
+    }
+    HuMemMemoryFree(ptr, retaddr);
+}
+
+void HuMemDirectFreeNum(int heap, u32 num)
+{
+    register u32 retaddr;
+    asm {
+        mflr retaddr
+    }
+    HuMemMemoryFreeNum(HeapTbl[heap], num, retaddr);
+}
+
+s32 HuMemUsedMallocSizeGet(int heap)
+{
+    return HuMemUsedMemorySizeGet(HeapTbl[heap]);
+}
+
+s32 HuMemUsedMallocBlockGet(int heap)
+{
+    return HuMemUsedMemoryBlockGet(HeapTbl[heap]);
+}
+
+u32 HuMemHeapSizeGet(int heap)
+{
+    return HeapSizeTbl[heap];
+}
+
+void *HuMemHeapPtrGet(int heap)
+{
+    return HeapTbl[heap];
+}
\ No newline at end of file
diff --git a/src/game/memory.c b/src/game/memory.c
new file mode 100644
index 00000000..990c70db
--- /dev/null
+++ b/src/game/memory.c
@@ -0,0 +1,202 @@
+#include "common.h"
+
+#define DATA_GET_BLOCK(ptr) ((struct memory_block *)(((char *)(ptr))-32))
+#define BLOCK_GET_DATA(block) (((char *)(block))+32)
+
+#define MEM_ALLOC_SIZE(size) (((size)+63) & 0xFFFFFFE0)
+
+struct memory_block {
+    s32 size;
+    u8 magic;
+    u8 flag;
+    struct memory_block *prev;
+    struct memory_block *next;
+    u32 num;
+    u32 retaddr;
+};
+
+static void *HuMemMemoryAlloc2(void *heap_ptr, s32 size, u32 num, u32 retaddr);
+
+void *HuMemHeapInit(void *ptr, s32 size)
+{
+    struct memory_block *block = ptr;
+    block->size = size;
+    block->magic = 205;
+    block->flag = 0;
+    block->prev = block;
+    block->next = block;
+    block->num = -256;
+    block->retaddr = 0xCDCDCDCD;
+    return block;
+}
+
+void *HuMemMemoryAllocNum(void *heap_ptr, s32 size, u32 num, u32 retaddr)
+{
+    return HuMemMemoryAlloc2(heap_ptr, size, num, retaddr);
+}
+
+void *HuMemMemoryAlloc(void *heap_ptr, s32 size, u32 retaddr)
+{
+    return HuMemMemoryAlloc2(heap_ptr, size, -256, retaddr);
+}
+
+static void *HuMemMemoryAlloc2(void *heap_ptr, s32 size, u32 num, u32 retaddr)
+{
+    s32 alloc_size = MEM_ALLOC_SIZE(size);
+    struct memory_block *block = heap_ptr;
+    do {
+        if(!block->flag && block->size >= alloc_size) {
+            if(block->size-alloc_size > 32u) {
+                struct memory_block *new_block = (struct memory_block *)(((u32)block)+alloc_size);
+                new_block->size = block->size-alloc_size;
+                new_block->magic = 205;
+                new_block->flag = 0;
+                new_block->retaddr = retaddr;
+                block->next->prev = new_block;
+                new_block->next = block->next;
+                block->next = new_block;
+                new_block->prev = block;
+                block->size = alloc_size;
+            }
+            block->flag = 1;
+            block->magic = 165;
+            block->num = num;
+            block->retaddr = retaddr;
+            return BLOCK_GET_DATA(block);
+        }
+        block = block->next;
+    } while(block != heap_ptr);
+    OSReport("HuMem>memory alloc error %08x(%08X): Call %08x\n", size, num, retaddr);
+    HuMemHeapDump(heap_ptr, -1);
+    return NULL;
+}
+
+void HuMemMemoryFreeNum(void *heap_ptr, u32 num, u32 retaddr)
+{
+    struct memory_block *block = heap_ptr;
+    do {
+        struct memory_block *block_next = block->next;
+        if(block->flag && block->num == num) {
+            HuMemMemoryFree(BLOCK_GET_DATA(block), retaddr);
+        }
+        block = block_next;
+    } while(block != heap_ptr);
+    
+}
+
+static void HuMemTailMemoryAlloc2() //Required for string literal
+{
+    OSReport("memory allocation(tail) error.\n");
+}
+
+void HuMemMemoryFree(void *ptr, u32 retaddr)
+{
+    struct memory_block *block;
+    if(!ptr) {
+        return;
+    }
+    block = DATA_GET_BLOCK(ptr);
+    if(block->magic != 165) {
+        OSReport("HuMem>memory free error. %08x( call %08x)\n", ptr, retaddr);
+        return;
+    }
+    if(block->prev < block && !block->prev->flag) {
+        block->flag  = 0;
+        block->magic = 205;
+        block->next->prev = block->prev;
+        block->prev->next = block->next;
+        block->prev->size += block->size;
+        block = block->prev;
+    }
+    if(block->next > block && !block->next->flag) {
+        block->next->next->prev = block;
+        block->size += block->next->size;
+        block->next = block->next->next;
+    }
+    block->flag = 0;
+    block->magic = 205;
+    block->retaddr = retaddr;
+}
+
+s32 HuMemUsedMemorySizeGet(void *heap_ptr)
+{
+    struct memory_block *block = heap_ptr;
+    s32 size = 0;
+    do {
+        if(block->flag == 1) {
+            size += block->size;
+        }
+        block = block->next;
+    } while(block != heap_ptr);
+    return size;
+}
+
+s32 HuMemUsedMemoryBlockGet(void *heap_ptr)
+{
+    struct memory_block *block = heap_ptr;
+    s32 num_blocks = 0;
+    do {
+        if(block->flag == 1) {
+            num_blocks++;
+        }
+        block = block->next;
+    } while(block != heap_ptr);
+    return num_blocks;
+}
+
+s32 HuMemMemoryAllocSizeGet(s32 size)
+{
+    return MEM_ALLOC_SIZE(size);
+}
+
+void HuMemHeapDump(void *heap_ptr, s16 status)
+{
+    struct memory_block *block = heap_ptr;
+    s32 size = 0;
+    s32 inactive_size = 0;
+    s32 num_blocks = 0;
+    s32 num_unused_blocks = 0;
+    u8 dump_type;
+
+    if(status < 0) {
+        dump_type = 10;
+    } else if(status == 0) {
+        dump_type = 0;
+    } else {
+        dump_type = 1;
+    }
+    OSReport("======== HuMem heap dump %08x ========\n", heap_ptr);
+    OSReport("MCB-----+Size----+MG+FL+Prev----+Next----+UNum----+Body----+Call----\n");
+    do {
+        if(dump_type == 10 || block->flag == dump_type) {
+            OSReport("%08x %08x %02x %02x %08x %08x %08x %08x %08x\n", block, block->size, block->magic, block->flag,
+                block->prev, block->next, block->num, BLOCK_GET_DATA(block), block->retaddr);
+        }
+        if(block->flag == 1) {
+            size += block->size;
+            num_blocks++;
+        } else {
+            inactive_size += block->size;
+            num_unused_blocks++;
+        }
+        
+        block = block->next;
+    } while(block != heap_ptr);
+    OSReport("MCB:%d(%d/%d) MEM:%08x(%08x/%08x)\n", num_blocks+num_unused_blocks, num_blocks, num_unused_blocks, 
+        size+inactive_size, size, inactive_size);
+    OSReport("======== HuMem heap dump %08x end =====\n", heap_ptr);
+}
+
+s32 HuMemMemorySizeGet(void *ptr)
+{
+    struct memory_block *block;
+    if(!ptr) {
+        return 0;
+    }
+    block = DATA_GET_BLOCK(ptr);
+    if(block->flag == 1 && block->magic == 165) {
+        return block->size-32;
+    } else {
+        return 0;
+    }
+}