Cool concept and great use of the limitation but I found it a bit frustrating to play. The slow move speed and occasional issues with collisions mentioned below, plus the less tactile controls and the fact that background was sometimes mostly just a solid colour made it feel very unresponsive. It could also do with a bit more warning when your oxygen is getting low as death feels very sudden and unavoidable in some cases. On the upside the art and sounds are fantastic and I love the idea of the gameplay loop, like a mini-Subnautica!