Don't you need to supply a download link? (For accessing the code, I mean.) Or is this not an open source/open development engine?
Other than that, nice work. Is that a physics system running, or simply some velocity/sphere collision code?
Additionally, does you engine support continuous input? I noticed that the controllable block only moved when I tapped the key; it didn't move for the duration of the press. Is that just based on your particular implementation?