Hey Autofasurer,
Thanks for trying out the game :D! Well openframework is suitable to create a game but its maybe more time consuming. The plus is that you get to know a lot of stuff. During the development I made a Prototype based on Threejs which can also be found under http://spin-gmdev.rhcloud.com after this step I started the development of the mobile version. For me it was clear to use open frameworks. I developed on Mac but used the desktop version initial to make sure the core/common part is portable. The full GUI stack was developed native but I even tried initial to create my own GUI stack. The problem was mostly related to animation thats why I removed it and replaced it with the OS-specific GUI elements. But the core parts of the game was cross platform. It includes all the parts with color placement/picking, level generation game logic, input/output and file handling. The newest OF version supports web as well via emscripten so you even can run the project now in the browser (v 0.9). Challenging was the 3d Orientation part and the 3d picking especially the math background. The project incl. prototype took ~580 hours and was developed in spare times in 9 month.
Would I use OF again for a game? Yeah but it depends on the style. If I would need heavy physics I probably would use unreal engine. For smaller scaled games like Spin i would go with it again but this time make the GUI stack portable as well to support more platforms. This would increase the work time of course but probably pays off later.
All in all experience was fun, community very helpful. For CPU & performance consider to reduce the draw calls as much as possible and use VBO & FBO to improve performance. Depending on the success I probably will put the cross platform part on github. I will post it than here but I don't know the exactly date...
Hope it helps
regards
Schreda