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Spacejack a UFO and turn alien tech against its owners across 49 action-packed stages. Use black holes, nukes, slow-mo, and more to survive escalating waves and save the planet.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Social Deduction Fest ends
WHAT WOULD YOU DO IN A UFO INVASION?
HOW ABOUT SPACEJACK A UFO AND TURN ALIEN TECH AGAINST THEM!
Take control, power up, and push back waves of space aliens in a fast, stage-based arcade fight for Earth. Blast through 49 stages of intensifying action as threats stack up and the sky gets meaner.
Drop a black hole to pull enemies into a vortex, nuke ’em back to the Stone Age, or flip the odds with slow-mo and invincibility when things get out of hand.
Health boosts, speed boosts, and weapon upgrades keep you evolving, while Swarm Time and Asteroid Alerts force you to adapt on the fly. Save the planet—one wave at a time.
Features
49 stages of intensifying action
Waves of space aliens to fight off
Space-age power-ups: black holes, nukes, slow-mo, and invincibility
Health, speed, and weapon upgrades
Swarm Time events and Asteroid Alerts hazards
