Just to notify that the Source link is wrong, it takes me to my Dropbox home.
And yeah it is nice. Works pretty well, it's some basic collision detection. I was wondering about what are your thoughts about Quintus, I don't really even know it but would love to know a little about your experiences.

I like it, it feels very smooth.

I like how the cube handles itself, nicely done! You could easily expand this into a real enjoyable game :)

Thanks for the words everyone, and to answer your question muramasa (if you ever even read this), I've decided to role with Quintus for the competition. It's really easy and simple to get a prototype running once you get over the kinks of it, and it's actually pretty fun to use, though it's restricted towards mainly being suited for platformers it seems, though could probably be easily edited for use with other viewpoints such as top down rpgs with enough time.

The source has been fixed. Not sure how I messed that up. I even zipped the folder and uploaded it to dropbox, just linked the wrong thing. Hopefully y'all can get a look at the code now. Feel free to use whatever assets are there as well.

I made the beginnings of a zelda-like in Quintus. In a conversation with the maintainer, he mentioned that his greatest regret is putting a platformer on the front-page of his site because everyone seems to get trapped in the "this is for platformers" mindset. Take a look at some other games made in Quintus. ^o^//