Quick Fuse
Challenge a friend (or any other player) to see whos faster disarming a bomb: whoever disarms the bomb first wins, the loser gets an explosion (auch!). The more bombs you successfully disarm, the higher the level you achieve, and the harder it is for others to disarm your bombs.
Single-player mode available for speed training (works offline).
Requires a (free) Game Center account for multi-player (combat) mode.