Tap bugs to squash them before the clock runs out. Big ones take several taps.

Centipedes split where you tap them. Crush the head (two taps) to wipe out the whole chain.

Clear a wave for bonus time. Waves get bigger and faster.

The light moves each wave - bugs avoid it. Use it to herd them.

Ant lines wander through as a bonus - tap one and the rest scatter.

Golden roach = +100, but it escapes after a few seconds.

Bosses invade every few waves - each one explodes when killed. Herd first, then strike.