Epic Inventor combines side-scroller, RPG and RTS elements into one random ball of Epic!
It is not the easiest game to get into. No description of the crafting materials or "outcome" is available (at least not on the linux machine I tried it on first) so most of the time I had no idea what I was doing... I thought I might give it another try, but I was not able to get is running on my Ubuntu 12.10 x64. In a more advanced state, I might come back and give it another try - but for now, I can't give a higher rating (sorry).