Drag anywhere to move. Hold FIRE to shoot, or tap it once to lock fire on (tap again to stop) — handy for one-handed play. Watch for the mystery UFO and falling power-ups. Every 5th wave is a boss fight.
CHOOSE A WAVE
Jump anywhere — go easier to relax, or skip past a boss if you're not in the mood.
Hold FIRE to shoot, or tap it once to lock fire on (tap again to release) — like caps lock. Drag anywhere to move. Tap ☰ to pause or change wave.
Music: Rossini, William Tell Overture — Academy of St Martin in the Fields, cond. Sir Neville Marriner