diff --git a/src/zeroxfc/nullpo/custom/modes/FireworkChallenge.java b/src/zeroxfc/nullpo/custom/modes/FireworkChallenge.java
index 6388d29..68b85fe 100644
--- a/src/zeroxfc/nullpo/custom/modes/FireworkChallenge.java
+++ b/src/zeroxfc/nullpo/custom/modes/FireworkChallenge.java
@@ -116,6 +116,15 @@ public class FireworkChallenge extends DummyMode {
 		"GLITCHYPSI, OSHISAURE, RY00001, AKARI, THE DRAGON GOD NERROTH.",
 		"YOU HAVE COMPLETED THE FIREWORK CHALLENGE!"
 	};
+
+	private static final int[] INPUT_SEQUENCE = {
+		Controller.BUTTON_DOWN, Controller.BUTTON_DOWN,
+		Controller.BUTTON_UP, Controller.BUTTON_UP,
+		Controller.BUTTON_RIGHT, Controller.BUTTON_LEFT,
+		Controller.BUTTON_RIGHT, Controller.BUTTON_LEFT,
+	};
+
+	private boolean[] presses;
 	
 	// Staff roll object
 	private ScrollingMarqueeText creditObject;
@@ -258,6 +267,7 @@ public class FireworkChallenge extends DummyMode {
 	private int[] rankingFireworksPlayer, rankingLevelPlayer, rankingTimePlayer;
 
 	private boolean killed;
+	// TODO: debug mode meme
 
 	// Get mode name
 	@Override
@@ -268,6 +278,8 @@ public String getName() {
 	// Initialise everything.
 	@Override
 	public void playerInit(GameEngine engine, int playerID) {
+		presses = new boolean[] { false, false, false, false, false, false, false, false, false, false };
+
 		SoundLoader.loadSoundset(SoundLoader.LOADTYPE_FIREWORKS);
 		
 		creditObject = new ScrollingMarqueeText(CREDIT_HEADINGS, CREDIT_TEXTS, EventReceiver.COLOR_ORANGE, EventReceiver.COLOR_WHITE);
diff --git a/src/zeroxfc/nullpo/custom/modes/ShadowMarathon.java b/src/zeroxfc/nullpo/custom/modes/ShadowMarathon.java
index 6cd90e9..2bbc57a 100644
--- a/src/zeroxfc/nullpo/custom/modes/ShadowMarathon.java
+++ b/src/zeroxfc/nullpo/custom/modes/ShadowMarathon.java
@@ -1819,7 +1819,8 @@ public void onLast(GameEngine engine, int playerID) {
 		}
 
 		if (engine.gameActive && (engine.stat == GameEngine.STAT_MOVE || engine.stat == GameEngine.STAT_ARE)) {
-			if (engine.ctrl.isPush(Controller.BUTTON_F) && onShadow && currentMaxMatchValue >= 0.75) {
+			// Sometimes engine.nowPieceObject is null?
+			if (engine.nowPieceObject != null && engine.ctrl.isPush(Controller.BUTTON_F) && onShadow && currentMaxMatchValue >= 0.75) {
 				fallPieceDraw = new Piece(engine.nowPieceObject);
 
 				int bX = receiver.getFieldDisplayPositionX(engine, playerID) + 4;