Build your own fully functional robots and use them to slide, crawl, roll and fly your way through a large interconnected puzzle-world. Collect components such as wheels and rockets. Re-wire controls and change the configuration at any time during play to solve the puzzles at hand. Infiltrate the factories of the Mobiloid Corporation. Level design is Metroid-inspired, ie. folded on itself and progress made by exploration and power-up.
A very engaging exploration-driven game. The mechanic of building and modifying your own character as you go is neat, and works pretty well, but there could be more variety in the parts.
Gameplay is smooth, but the game crashes quite a lot for me, usually on death.
Also, the option for deleting a profile is right next to the option for playing it, and there's no delete confirmation, so do be careful. I accidentally deleted my profile after completing the game while I was trying to explore the secret areas. =[
All in all, a very nice game, one of my favourites of recent memory, but it could use a lot more polish.