About This Demo

Grow your own way to survive.

Hetero-Genesis is a 2D deep-sea action roguelite where your build takes the shape of a living creature. Graft organs onto your body, combine their abilities, and keep moving as waves of predators close in. Every dive leaves you with a different body—and a different way to fight.

A complete dive. A selection of strange bodies.

The demo includes ten waves and three bosses, 41 graftable organs, 18 synergies, and three unlockable contracts. Octopus, jellyfish, and sea snake are available from the start; unlock the hermit crab with gene points. Clear A0 to unlock A1. Play again as often as you like, with no playtime countdown.

Three starting species. A fourth to unlock.

Try the octopus, jellyfish, and sea snake, then unlock the hermit crab for another starting body. Experiment with the demo's selected organs and evolution paths. The trailer and species montage also preview full-game species such as the nautilus, which is not playable in this demo.

Choose. Attach. Grow.

Pick an organ, choose its attachment slot, and watch it grow into your body. Placement matters: build around the parts you need, make room for new abilities, and weigh each upgrade against the strain your body can bear.

Bring your body into the fight

Close in with striking and piercing organs. Position your body to land hits, break enemy parts, and get clear before a dangerous encounter costs you a vital organ.

Build firepower into your anatomy

Graft ranged organs and send projectiles across the battlefield. Mix close-range pressure with attacks from a distance, then shape your movement around the body you have built.

A body that bends, stretches, and breaks

Flexible tentacles bend and stretch with your movement. Organs can be damaged or severed, and losing a key part can disrupt its synergies. Protect, repair, or replace the pieces that keep your build alive.

Ecological Graft: let another species take root

Evolution changes more than your stats. Choose Ecological Graft to bring traits of another species into your build, watch your body transform, and take its new possibilities into the next battle.

Make your build survive the pressure

Later waves fill the deep with enemies and overlapping attacks. Move, dash, and use active abilities while your organs do their work. A powerful combination still needs a body that can survive the next hit.

Fractured Mutation: become something else

When the option appears, choose Fractured Mutation to take a new species path within the same dive. Rework your approach around a changed body instead of waiting for the next run.

Face creatures built to stop you

Read a boss's attacks, find openings, and strike its vulnerable organs. Three boss encounters test whether the creature you have assembled can make it through a complete ten-wave dive.

More forms await in the full game

The full game expands the selection to ten playable species, more than 100 graftable organs, additional synergies and contracts, and difficulty levels up to A10. The demo gives you a focused selection of that body-building system.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Generative AI tools were used during development to assist with some visual assets, music and audio, localization drafts, and code. These materials were selected, edited and integrated by the developer before release. The game does not generate AI content during play or connect to external AI services.