Mobile gestures
- Swipe left / right: move 1 tile.
- Two-finger swipe left / right: move 2 tiles.
- Tap (one or two fingers): rotate.
- Two-finger swipe down: hard drop.
Dr. Blocks - Select Level
Higher levels have more toxin squares to clear
Number of colors
Earn wildcard blocks for matches of length 5 or more
Board width
Speed