diff --git a/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/Tetris.java b/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/Tetris.java
index 11c25ac..0107b50 100644
--- a/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/Tetris.java
+++ b/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/Tetris.java
@@ -28,7 +28,7 @@ class Tetris extends StatelessGame {
     public Tetris(int nextTetrominoesCount, boolean isFast, boolean hasCombat) {
         super(Dimension.THE_END.key, "Tetris", new PointsWinScore());
 
-        eventNode()
+        this.eventNode()
             .addListener(PlayerUseItemEvent.class, this::onPlayerInteract)
             .addListener(PlayerHandAnimationEvent.class, this::onPlayerAttack)
             .addListener(PlayerTickEvent.class, this::onPlayerTick);
@@ -58,7 +58,7 @@ class Tetris extends StatelessGame {
     protected void onStop() {
         this.tetrisGames.forEach((player, tetrisGame) -> {
             tetrisGame.loose();
-            getScore().insertResult(player, tetrisGame.getScore());
+            this.getScore().insertResult(player, tetrisGame.getScore());
             tetrisGame.sidebar.removeViewer(player);
         });
     }
@@ -106,7 +106,7 @@ class Tetris extends StatelessGame {
         TetrisGame tetrisGame = this.tetrisGames.get(player);
         if(tetrisGame == null) return;
         if(tetrisGame.lost && player.getGameMode() != GameMode.SPECTATOR) {
-            letPlayerLoose(player);
+            this.letPlayerLoose(player);
         }
     }
 
@@ -114,15 +114,15 @@ class Tetris extends StatelessGame {
         TetrisGame tetrisGame = this.tetrisGames.get(player);
         player.setGameMode(GameMode.SPECTATOR);
         player.setInvisible(true);
-        getScore().insertResult(player, tetrisGame.getScore());
+        this.getScore().insertResult(player, tetrisGame.getScore());
 
         boolean allGamesLost = this.tetrisGames.values().stream()
             .filter(game -> !game.lost)
             .toList()
             .isEmpty();
-        if(!setTimeLimit && !allGamesLost) {
+        if(!this.setTimeLimit && !allGamesLost) {
             this.setTimeLimit(90);
-            setTimeLimit = true;
+            this.setTimeLimit = true;
         }
     }
 
@@ -134,7 +134,7 @@ class Tetris extends StatelessGame {
         if(this.tetrisGames.get(p) == null) {
             this.tetrisGames.put(p, new TetrisGame(
                 this,
-                getSpawn().sub(6, 8, 15).add(this.tetrisGames.size()*30, 0, 0),
+                this.getSpawn().sub(6, 8, 15).add(this.tetrisGames.size()*30, 0, 0),
                 Tetromino.Shape.J,
                 this.nextTetrominoesCount,
                 this.isFast,
diff --git a/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/Playfield.java b/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/Playfield.java
index edf4ddb..115e0fa 100644
--- a/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/Playfield.java
+++ b/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/Playfield.java
@@ -74,10 +74,10 @@ public class Playfield {
             }
         }
 
-        batch.setBlock(getPlayerSpawnPosition().sub(0, 1, 0), Block.STONE);
-        batch.setBlock(getPlayerSpawnPosition().sub(1, 1, 0), Block.STONE);
-        batch.setBlock(getPlayerSpawnPosition().sub(1, 1, 1), Block.STONE);
-        batch.setBlock(getPlayerSpawnPosition().sub(0, 1, 1), Block.STONE);
+        batch.setBlock(this.getPlayerSpawnPosition().sub(0, 1, 0), Block.STONE);
+        batch.setBlock(this.getPlayerSpawnPosition().sub(1, 1, 0), Block.STONE);
+        batch.setBlock(this.getPlayerSpawnPosition().sub(1, 1, 1), Block.STONE);
+        batch.setBlock(this.getPlayerSpawnPosition().sub(0, 1, 1), Block.STONE);
 
         BatchUtil.loadAndApplyBatch(batch, this.instance, () -> {});
     }
@@ -90,7 +90,7 @@ public class Playfield {
                 if(this.instance.getBlock(this.lowerLeftCorner.add(x, y, 1)) == Block.AIR) isFullLine = false;
             }
             if(isFullLine) {
-                removeFullLine(y);
+                this.removeFullLine(y);
                 removedLinesCounter += 1;
                 y -= 1;
             }
@@ -99,10 +99,10 @@ public class Playfield {
     }
 
     public void addLines(int lines) {
-        int xPosMissing = random.nextInt(1, 10);
+        int xPosMissing = this.random.nextInt(1, 10);
 
         for (int i = 0; i < lines; i++) {
-            moveAllLinesUp();
+            this.moveAllLinesUp();
             for (int x = 1; x < 11; x++) {
                 if(x != xPosMissing) {
                     this.instance.setBlock(this.lowerLeftCorner.add(x, 1, 1), Block.LIGHT_GRAY_CONCRETE);
diff --git a/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/TetrisGame.java b/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/TetrisGame.java
index 20d2902..dc6cabe 100644
--- a/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/TetrisGame.java
+++ b/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/TetrisGame.java
@@ -121,8 +121,8 @@ public class TetrisGame {
 
     public void tick() {
         if(this.lost || this.paused) return;
-        if(!currentTetromino.moveDown()) {
-            setActiveTetrominoDown();
+        if(!this.currentTetromino.moveDown()) {
+            this.setActiveTetrominoDown();
         }
     }
 
@@ -176,7 +176,7 @@ public class TetrisGame {
     }
 
     private boolean switchHold() {
-        if(!holdPossible) return false;
+        if(!this.holdPossible) return false;
 
         Tetromino newCurrentTetromino;
         if(this.holdTetromino == null) {
@@ -194,7 +194,7 @@ public class TetrisGame {
 
         this.currentTetromino.setPosition(this.tetrominoSpawnPosition);
         this.currentTetromino.draw();
-        if(!this.currentTetromino.moveDown()) loose();
+        if(!this.currentTetromino.moveDown()) this.loose();
 
         double xChange = this.holdTetromino.getXChange();
         this.holdTetromino.setPosition(this.holdPosition.add(xChange, 0, 0));
@@ -312,7 +312,7 @@ public class TetrisGame {
         this.currentTetromino.setPosition(this.tetrominoSpawnPosition);
         this.currentTetromino.draw();
         if(!this.currentTetromino.moveDown()) {
-            loose();
+            this.loose();
         }
     }
 }
diff --git a/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/Tetromino.java b/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/Tetromino.java
index f673961..1c8a95c 100644
--- a/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/Tetromino.java
+++ b/src/main/java/eu/mhsl/minenet/minigames/instance/game/stateless/types/tetris/game/Tetromino.java
@@ -38,13 +38,13 @@ public class Tetromino {
         this.uuid = UUID.randomUUID();
 
         switch (this.shape) {
-            case I -> shapeArray = new int[][]{{0, 0, 0, 0}, {1, 1, 1, 1}, {0, 0, 0, 0}, {0, 0, 0, 0}};
-            case J -> shapeArray = new int[][]{{1,0,0}, {1,1,1}, {0,0,0}};
-            case L -> shapeArray = new int[][]{{0,0,1}, {1,1,1}, {0,0,0}};
-            case O -> shapeArray = new int[][]{{1,1}, {1,1}};
-            case S -> shapeArray = new int[][]{{0,1,1}, {1,1,0}, {0,0,0}};
-            case T -> shapeArray = new int[][]{{0,1,0}, {1,1,1}, {0,0,0}};
-            case Z -> shapeArray = new int[][]{{1,1,0}, {0,1,1}, {0,0,0}};
+            case I -> this.shapeArray = new int[][]{{0, 0, 0, 0}, {1, 1, 1, 1}, {0, 0, 0, 0}, {0, 0, 0, 0}};
+            case J -> this.shapeArray = new int[][]{{1,0,0}, {1,1,1}, {0,0,0}};
+            case L -> this.shapeArray = new int[][]{{0,0,1}, {1,1,1}, {0,0,0}};
+            case O -> this.shapeArray = new int[][]{{1,1}, {1,1}};
+            case S -> this.shapeArray = new int[][]{{0,1,1}, {1,1,0}, {0,0,0}};
+            case T -> this.shapeArray = new int[][]{{0,1,0}, {1,1,1}, {0,0,0}};
+            case Z -> this.shapeArray = new int[][]{{1,1,0}, {0,1,1}, {0,0,0}};
         }
     }
 
@@ -58,22 +58,22 @@ public class Tetromino {
 
     public boolean rotate(boolean clockwise) {
         int[][] newShapeArray = this.getTurnedShapeArray(clockwise);
-        return checkCollisionAndMove(this.position, newShapeArray);
+        return this.checkCollisionAndMove(this.position, newShapeArray);
     }
 
     public boolean moveDown() {
         Pos newPosition = this.position.sub(0, 1, 0);
-        return checkCollisionAndMove(newPosition, this.shapeArray);
+        return this.checkCollisionAndMove(newPosition, this.shapeArray);
     }
 
     public boolean moveLeft() {
         Pos newPosition = this.position.sub(1, 0, 0);
-        return checkCollisionAndMove(newPosition, this.shapeArray);
+        return this.checkCollisionAndMove(newPosition, this.shapeArray);
     }
 
     public boolean moveRight() {
         Pos newPosition = this.position.add(1, 0, 0);
-        return checkCollisionAndMove(newPosition, this.shapeArray);
+        return this.checkCollisionAndMove(newPosition, this.shapeArray);
     }
 
     public void draw() {
@@ -83,11 +83,11 @@ public class Tetromino {
     public void draw(boolean withGhost) {
         if(withGhost) {
             Pos ghostPos = this.position;
-            while (!checkCollision(ghostPos.sub(0, 1, 0), this.shapeArray)) {
+            while (!this.checkCollision(ghostPos.sub(0, 1, 0), this.shapeArray)) {
                 ghostPos = ghostPos.sub(0, 1, 0);
             }
             Pos positionChange = this.position.sub(ghostPos);
-            getBlockPositions().forEach(pos -> {
+            this.getBlockPositions().forEach(pos -> {
                 Entity ghostBlock = new Entity(ghostEntityType);
                 ((FallingBlockMeta) ghostBlock.getEntityMeta()).setBlock(this.getGhostBlock());
                 ghostBlock.setNoGravity(true);
@@ -97,11 +97,11 @@ public class Tetromino {
             });
         }
 
-        getBlockPositions().forEach(pos -> this.instance.setBlock(pos, this.getColoredBlock()));
+        this.getBlockPositions().forEach(pos -> this.instance.setBlock(pos, this.getColoredBlock()));
     }
 
     public void drawAsEntities() {
-        getBlockPositions().forEach(pos -> {
+        this.getBlockPositions().forEach(pos -> {
             Entity ghostBlock = new Entity(ghostEntityType);
             ((FallingBlockMeta) ghostBlock.getEntityMeta()).setBlock(this.getColoredBlock());
             ghostBlock.setNoGravity(true);
@@ -222,10 +222,10 @@ public class Tetromino {
     }
 
     private boolean checkCollision(Pos newPosition, int[][] newShapeArray) {
-        List<Pos> newBlockPositions = getBlockPositions(newPosition, newShapeArray);
+        List<Pos> newBlockPositions = this.getBlockPositions(newPosition, newShapeArray);
 
         for(Pos pos : newBlockPositions) {
-            if(isPartOfTetromino(pos)) continue;
+            if(this.isPartOfTetromino(pos)) continue;
             if(this.instance.getBlock(pos) == this.getGhostBlock()) continue;
             if(this.instance.getBlock(pos) != Block.AIR) return true;
         }
@@ -234,7 +234,7 @@ public class Tetromino {
     }
 
     private boolean checkCollisionAndMove(Pos newPosition, int[][] newShapeArray) {
-        if(!checkCollision(newPosition, newShapeArray)) {
+        if(!this.checkCollision(newPosition, newShapeArray)) {
             this.remove();
             this.shapeArray = Arrays.stream(newShapeArray).map(int[]::clone).toArray(int[][]::new);
             this.setPosition(newPosition);