diff --git a/asm/new_game.s b/asm/new_game.s
index 5a13e5f3e0..265945eb10 100644
--- a/asm/new_game.s
+++ b/asm/new_game.s
@@ -7,99 +7,6 @@
 
 
 
-	thumb_func_start NewGameInitData
-@ void NewGameInitData()
-NewGameInitData: @ 80844A0
-	push {r4,r5,lr}
-	ldr r0, =gSaveFileStatus
-	ldrh r0, [r0]
-	cmp r0, 0
-	beq _080844AE
-	cmp r0, 0x2
-	bne _080844B2
-_080844AE:
-	bl RtcReset
-_080844B2:
-	ldr r1, =gDifferentSaveFile
-	movs r0, 0x1
-	strb r0, [r1]
-	ldr r4, =gSaveBlock2Ptr
-	ldr r0, [r4]
-	adds r0, 0xAC
-	movs r5, 0
-	str r5, [r0]
-	bl ZeroPlayerPartyMons
-	bl ZeroEnemyPartyMons
-	bl ResetPokedex
-	bl sub_8084400
-	bl ClearSav1
-	bl ClearMailData
-	ldr r0, [r4]
-	strb r5, [r0, 0x9]
-	ldr r0, [r4]
-	adds r0, 0xA8
-	str r5, [r0]
-	bl InitPlayerTrainerId
-	bl PlayTimeCounter_Reset
-	bl ClearPokedexFlags
-	bl InitEventData
-	bl ClearTVShowData
-	bl ResetGabbyAndTy
-	bl ResetSecretBases
-	bl ClearBerryTrees
-	ldr r4, =gSaveBlock1Ptr
-	ldr r0, [r4]
-	movs r1, 0x92
-	lsls r1, 3
-	adds r0, r1
-	ldr r1, =0x00000bb8
-	bl SetMoney
-	movs r0, 0
-	bl SetCoins
-	bl ResetLinkContestBoolean
-	bl ResetGameStats
-	bl ClearAllContestWinnerPics
-	bl InitLinkBattleRecords
-	bl InitSeedotSizeRecord
-	bl InitLotadSizeRecord
-	ldr r0, =gPlayerPartyCount
-	strb r5, [r0]
-	bl ZeroPlayerPartyMons
-	bl ResetPokemonStorageSystem
-	bl ClearRoamerData
-	bl ClearRoamerLocationData
-	ldr r0, [r4]
-	ldr r1, =0x00000496
-	adds r0, r1
-	strh r5, [r0]
-	bl ClearBag
-	bl NewGameInitPCItems
-	bl ClearPokeblocks
-	bl ClearDecorationInventories
-	bl InitEasyChatPhrases
-	bl SetMauvilleOldMan
-	bl InitDewfordTrend
-	bl ResetFanClub
-	bl ResetLotteryCorner
-	bl WarpToTruck
-	ldr r0, =gUnknown_082715DE
-	bl ScriptContext2_RunNewScript
-	bl ResetMiniGamesResults
-	bl copy_strings_to_sav1
-	bl SetLilycoveLady
-	bl sub_819FAA0
-	bl sub_81A4B14
-	bl sub_8195E10
-	bl sub_801AFD8
-	bl sub_800E5AC
-	bl sub_81D54BC
-	bl ResetContestLinkResults
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end NewGameInitData
-
 	thumb_func_start ResetMiniGamesResults
 ResetMiniGamesResults: @ 80845CC
 	push {r4-r6,lr}
diff --git a/include/battle_message.h b/include/battle_message.h
new file mode 100644
index 0000000000..3e37a1ccdf
--- /dev/null
+++ b/include/battle_message.h
@@ -0,0 +1,23 @@
+#ifndef GUARD_BATTLE_MESSAGE_H
+#define GUARD_BATTLE_MESSAGE_H
+
+struct StringInfoBattle
+{
+    u16 currentMove;
+    u16 lastMove;
+    u16 lastItem;
+    u8 lastAbility;
+    u8 scrActive;
+    u8 unk1605E;
+    u8 hpScale;
+    u8 StringBank;
+    u8 moveType;
+    u8 abilities[4];
+    u8 textBuffs[3][0x10];
+};
+
+void BufferStringBattle(u16 stringID);
+u32 StrCpyDecodeToDisplayedStringBattle(const u8* src);
+u32 StrCpyDecodeBattle(const u8* src, u8* dst);
+
+#endif // GUARD_BATTLE_MESSAGE_H
diff --git a/include/berry.h b/include/berry.h
new file mode 100644
index 0000000000..f0acbe0ad6
--- /dev/null
+++ b/include/berry.h
@@ -0,0 +1,48 @@
+#ifndef GUARD_BERRY_H
+#define GUARD_BERRY_H
+
+enum
+{
+    BERRY_FIRMNESS_UNKNOWN,
+    BERRY_FIRMNESS_VERY_SOFT,
+    BERRY_FIRMNESS_SOFT,
+    BERRY_FIRMNESS_HARD,
+    BERRY_FIRMNESS_VERY_HARD,
+    BERRY_FIRMNESS_SUPER_HARD,
+};
+
+void ClearEnigmaBerries(void);
+void SetEnigmaBerry(u8 *src);
+u32 GetEnigmaBerryChecksum(struct EnigmaBerry *enigmaBerry);
+bool32 IsEnigmaBerryValid(void);
+const struct Berry *GetBerryInfo(u8 berry);
+struct BerryTree *GetBerryTreeInfo(u8 id);
+bool32 FieldObjectInteractionWaterBerryTree(void);
+bool8 IsPlayerFacingPlantedBerryTree(void);
+bool8 TryToWaterBerryTree(void);
+void ClearBerryTrees(void);
+bool32 BerryTreeGrow(struct BerryTree *tree);
+void BerryTreeTimeUpdate(s32 minutes);
+void PlantBerryTree(u8 id, u8 berry, u8 stage, bool8 sparkle);
+void RemoveBerryTree(u8 id);
+u8 GetBerryTypeByBerryTreeId(u8 id);
+u8 GetStageByBerryTreeId(u8);
+u8 ItemIdToBerryType(u16 item);
+u16 BerryTypeToItemId(u16 berry);
+void GetBerryNameByBerryType(u8 berry, u8 *string);
+void ResetBerryTreeSparkleFlag(u8 id);
+u8 BerryTreeGetNumStagesWatered(struct BerryTree *tree);
+u8 GetNumStagesWateredByBerryTreeId(u8 id);
+u8 CalcBerryYieldInternal(u16 max, u16 min, u8 water);
+u8 CalcBerryYield(struct BerryTree *tree);
+u8 GetBerryCountByBerryTreeId(u8 id);
+u16 GetStageDurationByBerryType(u8);
+void FieldObjectInteractionGetBerryTreeData(void);
+void sub_80B4EE4(void);
+void FieldObjectInteractionPlantBerryTree(void);
+void FieldObjectInteractionPickBerryTree(void);
+void FieldObjectInteractionRemoveBerryTree(void);
+u8 PlayerHasBerries(void);
+void ResetBerryTreeSparkleFlags(void);
+
+#endif // GUARD_BERRY_H
diff --git a/include/coins.h b/include/coins.h
new file mode 100644
index 0000000000..0cfd3db6a7
--- /dev/null
+++ b/include/coins.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_COINS_H
+#define GUARD_COINS_H
+
+void SetCoins(u16 newValue);
+
+#endif // GUARD_COINS_H
diff --git a/include/dewford_trend.h b/include/dewford_trend.h
new file mode 100644
index 0000000000..01e5d9762a
--- /dev/null
+++ b/include/dewford_trend.h
@@ -0,0 +1,7 @@
+#ifndef GUARD_DEWFORDTREND_H
+#define GUARD_DEWFORDTREND_H
+
+void InitDewfordTrend(void);
+void UpdateDewfordTrendPerDay(u16);
+
+#endif // GUARD_DEWFORDTREND_H
diff --git a/include/easy_chat.h b/include/easy_chat.h
new file mode 100644
index 0000000000..5143aa39c9
--- /dev/null
+++ b/include/easy_chat.h
@@ -0,0 +1,33 @@
+#ifndef GUARD_EASYCHAT_H
+#define GUARD_EASYCHAT_H
+
+// Taken from Pokeruby, check if it's correct
+enum
+{
+    EC_GROUP_POKEMON,
+    EC_GROUP_TRAINER,
+    EC_GROUP_STATUS,
+    EC_GROUP_BATTLE,
+    EC_GROUP_GREETINGS,
+    EC_GROUP_PEOPLE,
+    EC_GROUP_VOICES,
+    EC_GROUP_SPEECH,
+    EC_GROUP_ENDINGS,
+    EC_GROUP_FEELINGS,
+    EC_GROUP_CONDITIONS,
+    EC_GROUP_ACTIONS,
+    EC_GROUP_LIFESTYLE,
+    EC_GROUP_HOBBIES,
+    EC_GROUP_TIME,
+    EC_GROUP_MISC,
+    EC_GROUP_ADJECTIVES,
+    EC_GROUP_EVENTS,
+    EC_GROUP_MOVE_1,
+    EC_GROUP_MOVE_2,
+    EC_GROUP_TRENDY_SAYING,
+    EC_GROUP_POKEMON_2,
+};
+
+void InitEasyChatPhrases(void);
+
+#endif // GUARD_EASYCHAT_H
diff --git a/include/global.h b/include/global.h
index ebef8e1dd9..8ee40e79da 100644
--- a/include/global.h
+++ b/include/global.h
@@ -155,7 +155,7 @@ struct SaveBlock2
     /*0x90*/ u8 filler_90[0x8];
     /*0x98*/ struct Time localTimeOffset;
     /*0xA0*/ struct Time lastBerryTreeUpdate;
-    /*0xA8*/ u8 filler_A8[0x4];
+    /*0xA8*/ u32 field_A8;
     /*0xAC*/ u32 encryptionKey;
 
         // TODO: fix and verify labels
diff --git a/include/lilycove_lady.h b/include/lilycove_lady.h
new file mode 100644
index 0000000000..81825d8ac9
--- /dev/null
+++ b/include/lilycove_lady.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_LILYCOVE_LADY_H
+#define GUARD_LILYCOVE_LADY_H
+
+void SetLilycoveLady(void);
+
+#endif //GUARD_LILYCOVE_LADY_H
diff --git a/include/load_save.h b/include/load_save.h
index 2dce653854..0fedd720b7 100644
--- a/include/load_save.h
+++ b/include/load_save.h
@@ -3,6 +3,8 @@
 
 extern bool32 gFlashMemoryPresent;
 
+void ClearSav2(void);
+void ClearSav1(void);
 void CheckForFlashMemory(void);
 void MoveSaveBlocks_ResetHeap(void);
 bool32 GetSecretBase2Field_9(void);
diff --git a/include/lottery_corner.h b/include/lottery_corner.h
new file mode 100644
index 0000000000..5e2346d37e
--- /dev/null
+++ b/include/lottery_corner.h
@@ -0,0 +1,12 @@
+#ifndef GUARD_LOTTERY_CORNER_H
+#define GUARD_LOTTERY_CORNER_H
+
+void ResetLotteryCorner(void);
+void SetRandomLotteryNumber(u16 i);
+void RetrieveLotteryNumber(void);
+void PickLotteryCornerTicket(void);
+void SetLotteryNumber(u32 lotteryNum);
+u32 GetLotteryNumber(void);
+void SetLotteryNumber16_Unused(u16 lotteryNum);
+
+#endif // GUARD_LOTTERY_CORNER_H
diff --git a/include/mauville_old_man.h b/include/mauville_old_man.h
new file mode 100644
index 0000000000..d0526db885
--- /dev/null
+++ b/include/mauville_old_man.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_MAUVILLE_OLD_MAN_H
+#define GUARD_MAUVILLE_OLD_MAN_H
+
+void SetMauvilleOldMan(void);
+
+#endif // GUARD_MAUVILLE_OLD_MAN_H
diff --git a/include/money.h b/include/money.h
new file mode 100644
index 0000000000..ccb840a7f3
--- /dev/null
+++ b/include/money.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_MONEY_H
+#define GUARD_MONEY_H
+
+void SetMoney(u32* moneyPtr, u32 newValue);
+
+#endif // GUARD_MONEY_H
diff --git a/include/new_game.h b/include/new_game.h
index 00ab55d709..f9ad7fcb89 100644
--- a/include/new_game.h
+++ b/include/new_game.h
@@ -8,5 +8,6 @@ void SetDefaultOptions(void);
 void ClearPokedexFlags(void);
 void WarpToTruck(void);
 void NewGameInitData(void);
+void ResetMiniGamesResults(void);
 
 #endif // GUARD_NEW_GAME_H
diff --git a/include/pokeblock.h b/include/pokeblock.h
new file mode 100644
index 0000000000..5d52f8e55a
--- /dev/null
+++ b/include/pokeblock.h
@@ -0,0 +1,45 @@
+#ifndef GUARD_POKEBLOCK_H
+#define GUARD_POKEBLOCK_H
+
+enum
+{
+    PBLOCK_CLR_BLACK,
+    PBLOCK_CLR_RED,
+    PBLOCK_CLR_BLUE,
+    PBLOCK_CLR_PINK,
+    PBLOCK_CLR_GREEN,
+    PBLOCK_CLR_YELLOW
+};
+
+enum
+{
+    PBLOCK_COLOR,
+    PBLOCK_SPICY,
+    PBLOCK_DRY,
+    PBLOCK_SWEET,
+    PBLOCK_BITTER,
+    PBLOCK_SOUR,
+    PBLOCK_FEEL,
+};
+
+void ClearPokeblocks(void);
+
+/*
+void sub_810B96C(void);
+u8 sub_810BA50(s16, s16, u8);
+u8 sub_810C9B0(struct Pokeblock *);
+s16 GetPokeblockData(const struct Pokeblock *, u8);
+u8 sub_810C9E8(struct Pokeblock *);
+void sub_810BA7C(u8);
+bool8 PokeblockClearIfExists(u8);
+s16 PokeblockGetGain(u8, const struct Pokeblock *);
+u8 sub_810CB68(u8, u8*);
+void PokeblockCopyName(struct Pokeblock *pokeblock, u8 *dest);
+void CB2_PreparePokeblockFeedScene(void);
+
+#include "main.h"
+
+void sub_8136130(struct Pokeblock *, MainCallback);
+*/
+
+#endif // GUARD_POKEBLOCK_H
diff --git a/include/pokemon_size_record.h b/include/pokemon_size_record.h
new file mode 100644
index 0000000000..43cb505d6f
--- /dev/null
+++ b/include/pokemon_size_record.h
@@ -0,0 +1,12 @@
+#ifndef GUARD_POKEMON_SIZE_RECORD_H
+#define GUARD_POKEMON_SIZE_RECORD_H
+
+void InitSeedotSizeRecord(void);
+void GetSeedotSizeRecordInfo(void);
+void CompareSeedotSize(void);
+
+void InitLotadSizeRecord(void);
+void GetLotadSizeRecordInfo(void);
+void CompareLotadSize(void);
+
+#endif // GUARD_POKEMON_SIZE_RECORD_H
diff --git a/include/roamer.h b/include/roamer.h
new file mode 100644
index 0000000000..af7f86e794
--- /dev/null
+++ b/include/roamer.h
@@ -0,0 +1,11 @@
+#ifndef GUARD_ROAMER_H
+#define GUARD_ROAMER_H
+
+void ClearRoamerData(void);
+void ClearRoamerLocationData(void);
+void UpdateLocationHistoryForRoamer(void);
+void RoamerMoveToOtherLocationSet(void);
+void RoamerMove();
+u8 TryStartRoamerEncounter(void);
+
+#endif // GUARD_ROAMER_H
diff --git a/include/script.h b/include/script.h
new file mode 100644
index 0000000000..2a738698ca
--- /dev/null
+++ b/include/script.h
@@ -0,0 +1,59 @@
+#ifndef GUARD_SCRIPT_H
+#define GUARD_SCRIPT_H
+
+struct ScriptContext;
+
+typedef bool8 (*ScrCmdFunc)(struct ScriptContext *);
+typedef u8 Script[];
+
+struct ScriptContext
+{
+    u8 stackDepth;
+    u8 mode;
+    u8 comparisonResult;
+    u8 (*nativePtr)(void);
+    const u8 *scriptPtr;
+    const u8 *stack[20];
+    ScrCmdFunc *cmdTable;
+    ScrCmdFunc *cmdTableEnd;
+    u32 data[4];
+};
+
+#define ScriptReadByte(ctx) (*(ctx->scriptPtr++))
+
+void InitScriptContext(struct ScriptContext *ctx, void *cmdTable, void *cmdTableEnd);
+u8 SetupBytecodeScript(struct ScriptContext *ctx, const u8 *ptr);
+void SetupNativeScript(struct ScriptContext *ctx, void *ptr);
+void StopScript(struct ScriptContext *ctx);
+u8 RunScriptCommand(struct ScriptContext *ctx);
+u8 ScriptPush(struct ScriptContext *ctx, const u8 *ptr);
+const u8 *ScriptPop(struct ScriptContext *ctx);
+void ScriptJump(struct ScriptContext *ctx, u8 *ptr);
+void ScriptCall(struct ScriptContext *ctx, u8 *ptr);
+void ScriptReturn(struct ScriptContext *ctx);
+u16 ScriptReadHalfword(struct ScriptContext *ctx);
+u32 ScriptReadWord(struct ScriptContext *ctx);
+void ScriptContext2_Enable(void);
+void ScriptContext2_Disable(void);
+bool8 ScriptContext2_IsEnabled(void);
+void ScriptContext1_Init(void);
+bool8 ScriptContext2_RunScript(void);
+void ScriptContext1_SetupScript(const u8 *ptr);
+void ScriptContext1_Stop(void);
+void EnableBothScriptContexts(void);
+void ScriptContext2_RunNewScript(const u8 *ptr);
+u8 *mapheader_get_tagged_pointer(u8 tag);
+void mapheader_run_script_by_tag(u8 tag);
+u8 *mapheader_get_first_match_from_tagged_ptr_list(u8 tag);
+void mapheader_run_script_with_tag_x1(void);
+void mapheader_run_script_with_tag_x3(void);
+void mapheader_run_script_with_tag_x5(void);
+void mapheader_run_script_with_tag_x6(void);
+bool8 mapheader_run_first_tag2_script_list_match(void);
+void mapheader_run_first_tag4_script_list_match(void);
+u32 CalculateRamScriptChecksum(void);
+void ClearRamScript(void);
+bool8 InitRamScript(u8 *script, u16 scriptSize, u8 mapGroup, u8 mapNum, u8 objectId);
+u8 *GetRamScript(u8 objectId, u8 *script);
+
+#endif // GUARD_SCRIPT_H
diff --git a/src/new_game.c b/src/new_game.c
index 649cf4e6d4..0fd220d47b 100644
--- a/src/new_game.c
+++ b/src/new_game.c
@@ -1,22 +1,62 @@
 #include "global.h"
 #include "new_game.h"
 #include "rng.h"
+#include "pokemon.h"
+#include "roamer.h"
+#include "pokemon_size_record.h"
+#include "script.h"
+#include "lottery_corner.h"
+#include "play_time.h"
+#include "mauville_old_man.h"
+#include "lilycove_lady.h"
+#include "load_save.h"
+#include "pokeblock.h"
+#include "dewford_trend.h"
+#include "berry.h"
+#include "rtc.h"
+#include "easy_chat.h"
+#include "event_data.h"
+#include "money.h"
+#include "coins.h"
 
 extern u8 gPlayerPartyCount;
 extern u8 gDifferentSaveFile;
 extern u16 gSaveFileStatus;
 extern u8 gUnknown_030060B0;
 
+// TODO: replace those declarations with file headers
 extern u16 GetGeneratedTrainerIdLower(void);
 extern void ClearContestWinnerPicsInContestHall(void);
 extern void warp1_set(s8 mapBank, s8 mapNo, s8 warpNo, s8 xPos, s8 yPos);
 extern void warp_in(void);
 extern void sub_80BB358(void);
-extern void ZeroPlayerPartyMons(void);
-extern void ZeroEnemyPartyMons(void);
 extern void ResetBagScrollPositions(void);
 extern void sub_813624C(void); // clears something pokeblock related
-extern void ClearSav2(void); // clears something pokeblock related
+extern void ResetPokedex(void);
+extern void sub_8084400(void);
+extern void ClearMailData(void);
+extern void ClearTVShowData(void);
+extern void ResetGabbyAndTy(void);
+extern void ResetSecretBases(void);
+extern void ResetLinkContestBoolean(void);
+extern void ResetGameStats(void);
+extern void sub_8052DA8(void);
+extern void InitLinkBattleRecords(void);
+extern void ResetPokemonStorageSystem(void);
+extern void ClearBag(void);
+extern void NewGameInitPCItems(void);
+extern void ClearDecorationInventories(void);
+extern void ResetFanClub(void);
+extern void copy_strings_to_sav1(void);
+extern void sub_819FAA0(void);
+extern void sub_81A4B14(void);
+extern void sub_8195E10(void);
+extern void sub_801AFD8(void);
+extern void sub_800E5AC(void);
+extern void sub_81D54BC(void);
+extern void ResetContestLinkResults(void);
+
+extern u8 gUnknown_082715DE[];
 
 void WriteUnalignedWord(u32 var, u8 *dataPtr)
 {
@@ -104,8 +144,63 @@ void sub_808447C(void)
     ResetBagScrollPositions();
     sub_813624C();
 }
-/*
+
 void NewGameInitData(void)
 {
-    Finish when more header files are available
-}*/
+    if (gSaveFileStatus == 0 || gSaveFileStatus == 2)
+        RtcReset();
+
+    gDifferentSaveFile = 1;
+    gSaveBlock2Ptr->encryptionKey = 0;
+    ZeroPlayerPartyMons();
+    ZeroEnemyPartyMons();
+    ResetPokedex();
+    sub_8084400();
+    ClearSav1();
+    ClearMailData();
+    gSaveBlock2Ptr->specialSaveWarp = 0;
+    gSaveBlock2Ptr->field_A8 = 0;
+    InitPlayerTrainerId();
+    PlayTimeCounter_Reset();
+    ClearPokedexFlags();
+    InitEventData();
+    ClearTVShowData();
+    ResetGabbyAndTy();
+    ResetSecretBases();
+    ClearBerryTrees();
+    SetMoney(&gSaveBlock1Ptr->money, 3000);
+    SetCoins(0);
+    ResetLinkContestBoolean();
+    ResetGameStats();
+    ClearAllContestWinnerPics();
+    InitLinkBattleRecords();
+    InitSeedotSizeRecord();
+    InitLotadSizeRecord();
+    gPlayerPartyCount = 0;
+    ZeroPlayerPartyMons();
+    ResetPokemonStorageSystem();
+    ClearRoamerData();
+    ClearRoamerLocationData();
+    gSaveBlock1Ptr->registeredItem = 0;
+    ClearBag();
+    NewGameInitPCItems();
+    ClearPokeblocks();
+    ClearDecorationInventories();
+    InitEasyChatPhrases();
+    SetMauvilleOldMan();
+    InitDewfordTrend();
+    ResetFanClub();
+    ResetLotteryCorner();
+    WarpToTruck();
+    ScriptContext2_RunNewScript(gUnknown_082715DE);
+    ResetMiniGamesResults();
+    copy_strings_to_sav1();
+	SetLilycoveLady();
+	sub_819FAA0();
+	sub_81A4B14();
+	sub_8195E10();
+	sub_801AFD8();
+	sub_800E5AC();
+	sub_81D54BC();
+	ResetContestLinkResults();
+}