Operation Octo

Operation Octo is an action tower defense game starring Dr. Odin, an octopus scientist, and his dolphin colleague as they fight underwater skeletons. You place sea-creature turrets to fend off hordes, but if your defenses fall, you must dodge enemies and survive. The game offers 7–9 hours of play across three biomes.

Turrets and upgrades

You unlock mechanized sea-life turrets, including the Pistol Shrimp, Navy Seal and Death Ray, and work out how to use each type. Skeletons sometimes drop Elixirs, which let you transform turrets into different forms, such as frosty ice machines, powerful mutants or stealth weapons.

Enemies and biomes

You face sword-swinging pirates, poison-wielding chemists and skeletal dragons, among other skeleton enemies that can change how you play. As you explore the seven seas, you add more creatures to your turret collection and encounter new dangers. Adapt to each environment, avoiding toxic brine pools and remembering your light in the darkness of the deep sea.

Boss fights

Special levels pit you against larger-than-life bosses with formidable abilities.