Wow I'm surprised, I didn't expect to find a post about Playup Tools on Sketchucation. Anyway, I figured I would drop in and let everyone know that we've seen the thread and the interest in the tools. Pretty cool Although I'm sorry we don't currently have support for Unreal or Crytek but I've bumped it up on my list of things to evaluated.

Just know that we started with Halflife Source instead of Unreal, Gamebryo, Crytek, etc.. because the Source tools are terrible and the mod community/user base is large. Unreal also has a large community but its tools are easier to master and Crytek's are even better. As such, we figured a large body of frustrated Half-life mod makers would be a good starting place to develop a user base. But we've always planned to support and augment SketchUp as an editor for the popular game engines.

Thanks again!