diff --git a/engine/battle/core.asm b/engine/battle/core.asm
index 77ed507fb9c..55fde7d3a2f 100644
--- a/engine/battle/core.asm
+++ b/engine/battle/core.asm
@@ -624,7 +624,8 @@ ParsePlayerAction:
 	jr nz, .locked_in
 	xor a
 	ld [wMoveSelectionMenuType], a
-	inc a ; POUND
+	assert POUND == 1
+	inc a
 	ld [wFXAnimID], a
 	call MoveSelectionScreen
 	push af
@@ -3826,7 +3827,8 @@ TryToRunAwayFromBattle:
 	cp BATTLEACTION_FORFEIT
 	ld a, DRAW
 	jr z, .fled
-	dec a ; LOSE
+	assert DRAW - 1 == LOSE
+	dec a
 .fled
 	ld b, a
 	ld a, [wBattleResult]
diff --git a/engine/battle_anims/functions.asm b/engine/battle_anims/functions.asm
index 3cbca9ae60e..9b157ed95a2 100644
--- a/engine/battle_anims/functions.asm
+++ b/engine/battle_anims/functions.asm
@@ -1244,7 +1244,9 @@ BattleAnimFunc_Sing:
 	ld hl, BATTLEANIMSTRUCT_PARAM
 	add hl, bc
 	ld a, BATTLE_ANIM_FRAMESET_MUSIC_NOTE_1
-	add [hl] ; BATTLE_ANIM_FRAMESET_MUSIC_NOTE_2 BATTLE_ANIM_FRAMESET_MUSIC_NOTE_3
+	assert BATTLE_ANIM_FRAMESET_MUSIC_NOTE_1 + 1 == BATTLE_ANIM_FRAMESET_MUSIC_NOTE_2 \
+		&& BATTLE_ANIM_FRAMESET_MUSIC_NOTE_2 + 1 == BATTLE_ANIM_FRAMESET_MUSIC_NOTE_3
+	add [hl]
 	call ReinitBattleAnimFrameset
 
 .one
@@ -1510,15 +1512,15 @@ BattleAnimFunc_Clamp_Encore:
 	ld hl, BATTLEANIMSTRUCT_VAR2
 	add hl, bc
 	ld a, [hl]
-	inc a ; BATTLE_ANIM_FRAMESET_3B (Clamp Flipped)
-	      ; BATTLE_ANIM_FRAMESET_A1 (Hands Flipped)
+	assert BATTLE_ANIM_FRAMESET_CLAMP + 1 ==  BATTLE_ANIM_FRAMESET_CLAMP_FLIPPED
+	assert BATTLE_ANIM_FRAMESET_ENCORE_HAND + 1 == BATTLE_ANIM_FRAMESET_ENCORE_HAND_FLIPPED
+	inc a
 	jr .reinit
 
 .load_no_inc
 	ld hl, BATTLEANIMSTRUCT_VAR2
 	add hl, bc
-	ld a, [hl] ; BATTLE_ANIM_FRAMESET_3A (Clamp)
-	           ; BATTLE_ANIM_FRAMESET_A0 (Hands)
+	ld a, [hl] ; BATTLE_ANIM_FRAMESET_CLAMP or BATTLE_ANIM_FRAMESET_ENCORE_HAND
 .reinit
 	call ReinitBattleAnimFrameset
 	ld hl, BATTLEANIMSTRUCT_VAR1
@@ -1844,8 +1846,10 @@ BattleAnimFunc_Wrap:
 	ld hl, BATTLEANIMSTRUCT_FRAMESET_ID
 	add hl, bc
 	ld a, [hl]
-	inc a ; BATTLE_ANIM_FRAMESET_BIND_2
-	      ; BATTLE_ANIM_FRAMESET_BIND_4
+	assert BATTLE_ANIM_FRAMESET_BIND_1 + 1 == BATTLE_ANIM_FRAMESET_BIND_2 \ 
+		&& BATTLE_ANIM_FRAMESET_BIND_2 + 1 == BATTLE_ANIM_FRAMESET_BIND_3 \
+		&& BATTLE_ANIM_FRAMESET_BIND_3 + 1 == BATTLE_ANIM_FRAMESET_BIND_4
+	inc a
 	call ReinitBattleAnimFrameset
 	call BattleAnim_IncAnonJumptableIndex
 	ld hl, BATTLEANIMSTRUCT_VAR1 ; Unused?
@@ -2344,7 +2348,9 @@ BattleAnimFunc_Sound:
 	ld hl, BATTLEANIMSTRUCT_PARAM
 	add hl, bc
 	ld a, BATTLE_ANIM_FRAMESET_SOUND_1
-	add [hl] ; BATTLE_ANIM_FRAMESET_SOUND_2 BATTLE_ANIM_FRAMESET_SOUND_3
+	assert BATTLE_ANIM_FRAMESET_SOUND_1 + 1 == BATTLE_ANIM_FRAMESET_SOUND_2 \
+		&& BATTLE_ANIM_FRAMESET_SOUND_2 + 1 == BATTLE_ANIM_FRAMESET_SOUND_3
+	add [hl]
 	call ReinitBattleAnimFrameset
 	ret
 
@@ -2420,7 +2426,8 @@ BattleAnimFunc_ConfuseRay:
 	and $80
 	rlca
 	ld [hl], a
-	add BATTLE_ANIM_FRAMESET_CONFUSE_RAY_1 ; BATTLE_ANIM_FRAMESET_CONFUSE_RAY_2
+	assert BATTLE_ANIM_FRAMESET_CONFUSE_RAY_1 + 1 == BATTLE_ANIM_FRAMESET_CONFUSE_RAY_2
+	add BATTLE_ANIM_FRAMESET_CONFUSE_RAY_1
 	call ReinitBattleAnimFrameset
 	ret
 
@@ -2490,8 +2497,9 @@ BattleAnimFunc_Dizzy:
 	rlca
 	ld hl, BATTLEANIMSTRUCT_VAR1
 	add hl, bc
-	add [hl] ; BATTLE_ANIM_FRAMESET_61 BATTLE_ANIM_FRAMESET_62
-	         ; BATTLE_ANIM_FRAMESET_9C BATTLE_ANIM_FRAMESET_9D
+	assert BATTLE_ANIM_FRAMESET_CHICK_1 + 1 ==  BATTLE_ANIM_FRAMESET_CHICK_2
+	assert BATTLE_ANIM_FRAMESET_IMP + 1 == BATTLE_ANIM_FRAMESET_IMP_FLIPPED
+	add [hl]
 	call ReinitBattleAnimFrameset
 	ld hl, BATTLEANIMSTRUCT_PARAM
 	add hl, bc
@@ -2528,15 +2536,15 @@ BattleAnimFunc_Dizzy:
 	ld hl, BATTLEANIMSTRUCT_VAR1
 	add hl, bc
 	ld a, [hl]
-	inc a ; BATTLE_ANIM_FRAMESET_62
-	      ; BATTLE_ANIM_FRAMESET_9D
+	assert BATTLE_ANIM_FRAMESET_CHICK_1 + 1 ==  BATTLE_ANIM_FRAMESET_CHICK_2
+	assert BATTLE_ANIM_FRAMESET_IMP + 1 == BATTLE_ANIM_FRAMESET_IMP_FLIPPED
+	inc a
 	jr .got_frameset
 
 .not_flipped
 	ld hl, BATTLEANIMSTRUCT_VAR1
 	add hl, bc
-	ld a, [hl] ; BATTLE_ANIM_FRAMESET_61
-	           ; BATTLE_ANIM_FRAMESET_9C
+	ld a, [hl] ; BATTLE_ANIM_FRAMESET_CHICK_1 or BATTLE_ANIM_FRAMESET_IMP
 .got_frameset
 	call ReinitBattleAnimFrameset
 	ret
@@ -2556,7 +2564,9 @@ BattleAnimFunc_Amnesia:
 	ld hl, BATTLEANIMSTRUCT_PARAM
 	add hl, bc
 	ld a, [hl]
-	add BATTLE_ANIM_FRAMESET_AMNESIA_1 ; BATTLE_ANIM_FRAMESET_AMNESIA_2 BATTLE_ANIM_FRAMESET_AMNESIA_3
+	assert BATTLE_ANIM_FRAMESET_AMNESIA_1 + 1 == BATTLE_ANIM_FRAMESET_AMNESIA_2 \
+		&& BATTLE_ANIM_FRAMESET_AMNESIA_2 + 1 == BATTLE_ANIM_FRAMESET_AMNESIA_3
+	add BATTLE_ANIM_FRAMESET_AMNESIA_1
 	call ReinitBattleAnimFrameset
 	ld hl, BATTLEANIMSTRUCT_PARAM
 	add hl, bc
@@ -2644,7 +2654,9 @@ BattleAnimFunc_String:
 	add hl, bc
 	set OAM_Y_FLIP, [hl]
 .not_param_zero
-	add BATTLE_ANIM_FRAMESET_STRING_SHOT_1 ; BATTLE_ANIM_FRAMESET_STRING_SHOT_2 BATTLE_ANIM_FRAMESET_STRING_SHOT_3
+	assert BATTLE_ANIM_FRAMESET_STRING_SHOT_1 + 1 == BATTLE_ANIM_FRAMESET_STRING_SHOT_2 \
+		&& BATTLE_ANIM_FRAMESET_STRING_SHOT_2 + 1 == BATTLE_ANIM_FRAMESET_STRING_SHOT_3
+	add BATTLE_ANIM_FRAMESET_STRING_SHOT_1
 	call ReinitBattleAnimFrameset
 .one
 	ret
@@ -3541,7 +3553,9 @@ BattleAnimFunc_SpeedLine:
 	add hl, bc
 	ld a, [hl]
 	and $7f
-	add BATTLE_ANIM_FRAMESET_SPEED_LINE_1 ; BATTLE_ANIM_FRAMESET_SPEED_LINE_2 BATTLE_ANIM_FRAMESET_SPEED_LINE_3
+	assert BATTLE_ANIM_FRAMESET_SPEED_LINE_1 + 1 == BATTLE_ANIM_FRAMESET_SPEED_LINE_2 \
+		&& BATTLE_ANIM_FRAMESET_SPEED_LINE_2 + 1 == BATTLE_ANIM_FRAMESET_SPEED_LINE_3
+	add BATTLE_ANIM_FRAMESET_SPEED_LINE_1
 	call ReinitBattleAnimFrameset
 .one
 	ld hl, BATTLEANIMSTRUCT_PARAM
@@ -3713,8 +3727,13 @@ BattleAnimFunc_LockOnMindReader:
 	and $f
 	ld hl, BATTLEANIMSTRUCT_FRAMESET_ID
 	add hl, bc
-	add [hl] ; BATTLE_ANIM_FRAMESET_8F BATTLE_ANIM_FRAMESET_90 BATTLE_ANIM_FRAMESET_91
-	         ; BATTLE_ANIM_FRAMESET_93 BATTLE_ANIM_FRAMESET_94 BATTLE_ANIM_FRAMESET_95
+	assert BATTLE_ANIM_FRAMESET_LOCK_ON_1 + 1 == BATTLE_ANIM_FRAMESET_LOCK_ON_2 \
+		&& BATTLE_ANIM_FRAMESET_LOCK_ON_2 + 1 == BATTLE_ANIM_FRAMESET_LOCK_ON_3 \
+		&& BATTLE_ANIM_FRAMESET_LOCK_ON_3 + 1 == BATTLE_ANIM_FRAMESET_LOCK_ON_4
+	assert BATTLE_ANIM_FRAMESET_MIND_READER_1 + 1 == BATTLE_ANIM_FRAMESET_MIND_READER_2 \
+		&& BATTLE_ANIM_FRAMESET_MIND_READER_2 + 1 == BATTLE_ANIM_FRAMESET_MIND_READER_3 \
+		&& BATTLE_ANIM_FRAMESET_MIND_READER_3 + 1 == BATTLE_ANIM_FRAMESET_MIND_READER_4
+	add [hl]
 	call ReinitBattleAnimFrameset
 	ld hl, BATTLEANIMSTRUCT_PARAM
 	add hl, bc
@@ -3774,7 +3793,9 @@ BattleAnimFunc_HealBellNotes:
 	ld hl, BATTLEANIMSTRUCT_PARAM
 	add hl, bc
 	ld a, BATTLE_ANIM_FRAMESET_MUSIC_NOTE_1
-	add [hl] ; BATTLE_ANIM_FRAMESET_MUSIC_NOTE_2 BATTLE_ANIM_FRAMESET_MUSIC_NOTE_3
+	assert BATTLE_ANIM_FRAMESET_MUSIC_NOTE_1 + 1 == BATTLE_ANIM_FRAMESET_MUSIC_NOTE_2 \
+		&& BATTLE_ANIM_FRAMESET_MUSIC_NOTE_2 + 1 == BATTLE_ANIM_FRAMESET_MUSIC_NOTE_3
+	add [hl]
 	call ReinitBattleAnimFrameset
 .one
 	ld hl, BATTLEANIMSTRUCT_YOFFSET
diff --git a/engine/items/pack.asm b/engine/items/pack.asm
index 2a16868e90d..afa59839eef 100644
--- a/engine/items/pack.asm
+++ b/engine/items/pack.asm
@@ -501,11 +501,14 @@ TossMenu:
 
 ResetPocketCursorPositions: ; unreferenced
 	ld a, [wCurPocket]
-	and a ; ITEM_POCKET
+	assert ITEM_POCKET == 0
+	and a
 	jr z, .items
-	dec a ; BALL_POCKET
+	assert BALL_POCKET == 1
+	dec a
 	jr z, .balls
-	dec a ; KEY_ITEM_POCKET
+	assert KEY_ITEM_POCKET == 2
+	dec a
 	jr z, .key
 	ret
 
diff --git a/engine/link/link.asm b/engine/link/link.asm
index cb9a33a56d3..c40522cd314 100644
--- a/engine/link/link.asm
+++ b/engine/link/link.asm
@@ -2212,7 +2212,8 @@ endc
 	call DelayFrames
 	xor a
 	ldh [hVBlank], a
-	inc a ; LINK_TIMECAPSULE
+	assert LINK_TIMECAPSULE == 1
+	inc a
 	ld [wLinkMode], a
 	ret
 
@@ -2285,7 +2286,7 @@ SetBitsForTimeCapsuleRequest:
 	ldh [rSC], a
 	ld a, (1 << rSC_ON) | (0 << rSC_CLOCK)
 	ldh [rSC], a
-	xor a ; LINK_TIMECAPSULE - 1
+	xor a ; LINK_NULL
 	ld [wPlayerLinkAction], a
 	ld [wChosenCableClubRoom], a
 	ret
diff --git a/engine/overworld/map_object_action.asm b/engine/overworld/map_object_action.asm
index 916131f056f..f26bc4c2cba 100644
--- a/engine/overworld/map_object_action.asm
+++ b/engine/overworld/map_object_action.asm
@@ -275,8 +275,8 @@ SetFacingBoulderDust:
 	and 2
 	ld a, FACING_BOULDER_DUST_1
 	jr z, .ok
-	inc a
 	assert FACING_BOULDER_DUST_1 + 1 == FACING_BOULDER_DUST_2
+	inc a
 .ok
 	ld [hl], a
 	ret
@@ -291,8 +291,8 @@ SetFacingGrassShake:
 	and 4
 	ld a, FACING_GRASS_1
 	jr z, .ok
-	inc a ; FACING_GRASS_2
-
+	assert FACING_GRASS_1 + 1 == FACING_GRASS_2
+	inc a
 .ok
 	ld [hl], a
 	ret
diff --git a/engine/pokegear/pokegear.asm b/engine/pokegear/pokegear.asm
index 004cb51073c..ac8bac49713 100644
--- a/engine/pokegear/pokegear.asm
+++ b/engine/pokegear/pokegear.asm
@@ -2539,7 +2539,8 @@ Pokedex_GetArea:
 	ld a, [wPlayerGender]
 	bit PLAYERGENDER_FEMALE_F, a
 	jr z, .male
-	inc c ; PAL_OW_BLUE
+	assert PAL_OW_RED + 1 == PAL_OW_BLUE
+	inc c
 .male
 	ld a, c
 	ld [hli], a ; attributes
diff --git a/engine/pokemon/european_mail.asm b/engine/pokemon/european_mail.asm
index 85b7a26496d..f2fc4d1e6ca 100644
--- a/engine/pokemon/european_mail.asm
+++ b/engine/pokemon/european_mail.asm
@@ -6,16 +6,20 @@ ParseMailLanguage:
 	cp "E"
 	ret nz
 	ld a, [hli]
-	inc c ; MAIL_LANG_FRENCH
+	assert MAIL_LANG_ENGLISH + 1 == MAIL_LANG_FRENCH
+	inc c
 	cp "F"
 	ret z
-	inc c ; MAIL_LANG_GERMAN
+	assert MAIL_LANG_FRENCH + 1 == MAIL_LANG_GERMAN
+	inc c
 	cp "G"
 	ret z
-	inc c ; MAIL_LANG_ITALIAN
+	assert MAIL_LANG_GERMAN + 1 == MAIL_LANG_ITALIAN
+	inc c
 	cp "I"
 	ret z
-	inc c ; MAIL_LANG_SPANISH
+	assert MAIL_LANG_ITALIAN + 1 == MAIL_LANG_SPANISH
+	inc c
 	cp "S"
 	ret z
 	ld c, MAIL_LANG_ENGLISH
diff --git a/home/tilemap.asm b/home/tilemap.asm
index 4f87e02d52d..96251e2eb8f 100644
--- a/home/tilemap.asm
+++ b/home/tilemap.asm
@@ -229,8 +229,10 @@ GetHPPal::
 	ld a, e
 	cp (HP_BAR_LENGTH_PX * 50 / 100) ; 24
 	ret nc
-	inc d ; HP_YELLOW
+	assert HP_GREEN + 1 == HP_YELLOW
+	inc d
 	cp (HP_BAR_LENGTH_PX * 21 / 100) ; 10
 	ret nc
-	inc d ; HP_RED
+	assert HP_YELLOW + 1 == HP_RED
+	inc d
 	ret