Check out Veins for free! It's a physics-based multiplayer game where you refurbish a home. :)

We're gonna continue development on this and make a full version of the game with way more content; new levels, different game modes, other playable characters, etc..
We'll hopefully release a patch soon that deals with some issues, mainly the multiplayer regions. We don't currently have a way to switch regions in the game, so we made different builds for different regions. This is something we want to fix. There are also some spelling mistakes, and some issues with the difficulty curve.