This is one IFComp game I was never able to play due to its use of an outdated Java platform that you have to pay to download.
I was able to decompile its files and port it to Inform (which I've added as a link here).
It's a small game, with only a few puzzles. You're exploring an abandoned building after trying to grab some loose change. The biggest puzzle is finding a mouse running around a maze. The logic of the maze is pretty frustrating: (Spoiler - click to show)You have to predict where the mouse will go and get a number to light up beneath it. Randomly, the mouse will go check the key. If it was happy before and had the right number lit up, it will push it out, otherwise it won't.
So, pretty small and kind of frustrating, but the java code was really neat to work with.