Why you forgot about Blender and Steam??? Blender is #1 modelling software in the world. You can see a lot of animations on Disney's main page which madeby Blender in Blender Foundation in Amsterdam. And Blender has all in one production pipline elements (sculpting, modelling, texture painting, shading, render engines, gaming, compositing, lighting, 2D and 3D Tracking, simulations and etc. Why you still don t want to improve Linux version?? And here is Steam. Steam has a small app which sells huge amount of games for Linux. You can make it for Linux, too. Just your your site, no need for Ubuntu markets or etc.