The Eternal Cylinder is an open-world survival adventure game released in 2021 for the Xbox Series X and other platforms. Developed by ACE Team, players control a herd of adorable creatures called Trebhums and navigate a vast, alien world filled with exotic lifeforms and surreal environments. Players must adapt and evolve to survive against the ever-present threat of the Cylinder, a massive rolling structure that crushes everything in its path. The game stands out for its unique art style, ecosystem, and the evolutionary mechanics that allow players to upgrade their creatures in response to the challenges they face.