Over last weeks, automated bug reporting service have received logs with couple startup crashes due to lack of DirectX 11 support. Those were mostly from computers using ~10 year old notebook GPUs (more or less Windows Vista era).
Support for those and DirectX 10 GPUs is now implemented. Creatura should now run fine on legacy graphic cards (Like GeForce GT 330M), with couple of visual features disabled and some calculations moved to CPU due to lack of Compute Shaders support on those older platforms.
Other players can now select in Graphics option whether they want to enable plant ground imprints and tank side reflections. Disabling those can give a minor performance boost on lower end machines.
Steam Survey shows around 5% of userbase still using DirectX 10 cards. Playerbase for DirectX 9 cards is below 1%, and Creatura will not support those Windows XP era GPUs. While technically possible, the performance losses from using older DirectX9 API would probably make the game barely playable.
Sorry for everyone who bought the game with older GPU and had to wait for compatibility. On the bright side - the latest version (0.52g Rev. 4) looks finally pretty stable, with very moderate amount of problems reported, so it's probably best time so far to get into Creatura!