Left/Right arrow key - Move.
A - Shoot.
S - Use Slot Machine.
Shoot enemies of the same color to earn combo points. Collect the gems they drop to fill your slot machine meter.
Match 3 symbols on the slot machine to win a special attack.
Hint: Don't let the bugs reach you, and avoid the webs!
If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).