Choko Loco 2

A fairly linear action adventure game where you collect spam, extra lives and fight lovecraftian monsters. There is some exploration but it's more of an action game. I consider it of the "psychological horror" genre. It is also a 3d platformer, like Mario 64 but insanely twisted. You can also swim underwater, and you will have to to finish the game. There are other environmental hazards such as mud and slime.

After a massive storm and perfect growing conditions, Mama Lewis wakes up one morning to find his house is surrounded by killer man eating choko vines. Deprived of guns, he discovers the best way to neutralise the tentacled menace is with bullets of hot cum. Lewis soon finds himself, a soldier in an unrelenting battle to save mankind from an unspeakable eldritch Horror. This battle will force him to descend into a subterranean world hitherto unknown to him, a world oozing with rancid slime and teeming with disgusting chokos. It will test the very limits of his gag reflex and even his sanity.