Massive amounts of destruction, capture the flag gameplay, impressive physics and simply endearing graphics make this a huge hit in my eyes. I only wish the distribution rights stayed in the hands of the students who created it so they could find a way to profit from the excellent game they created. I'd happily pay for a copy.
Steve recently saw his baby featured in the new 'Games For Windows' magazine. A crowning point, I'm sure.
If you like games, you'll enjoy Toblo. Free to download and play, so you have no excuse. Give it a try and spread the word if you like it.