Block Center puts a square on screen that slowly drifts toward the edges on its own. Drag it back toward the center to earn points while it stays near the middle zone. The longer you hold it centered, the more you score—but let go for too long and it slides toward the border. If the block drifts completely off screen, the game ends. It feels like a tug-of-war between your finger and the block's wander. Stay alert, pull it back, and see how long you can keep the block balanced at the heart of the screen.