Lionfish Reef Heroes

The Ocean Threats update: new bullet-hell lionfish, the Microplastic Monster, full-screen boss fights with 45 new moves, combos and new abilities.

Invasive lionfish are taking over the reef. Grab your spear and dive in.

Lionfish Reef Heroes is a pixel-art underwater arcade game about a real conservation problem. Swim through ten ocean habitats, remove the lionfish that don't belong there, and keep the native wildlife safe.

HUNT INVASIVE LIONFISH Spear lionfish while you keep an eye on your air and your health.

PROTECT NATIVE REEF LIFE Sea turtles, rays and reef fish live here too. Learn who belongs on the reef.

EXPLORE TEN OCEAN HABITATS From sunlit shoals to shipwrecks and coral atolls, each habitat has its own wildlife.

FACE GIANT BOSSES Take on huge sea creatures like the Ironveil Kraken.

UPGRADE YOUR GEAR Earn coins as you play and spend them on better equipment.

FREE TO PLAY No account needed. Kid-friendly ads help keep the game free. Optional one-time Relic Packs and Remove Ads are available, with a grown-up check before every purchase, and every relic can also be earned by playing. Your progress stays on your device.

HELP WHEN YOU NEED IT Every habitat opens with a short tip, and Help and Tips pages cover controls, survival, wildlife and rewards.

WEEKLY EVENTS A new goal every Monday, with a treasure chest and coins as the reward.