I haven't made it very far in the game yet, but it's definitely a unique experience, that may or may not be for you.
If you are a programmer or a "I only play uncommon games" type of guy, you'll probably like this, otherwise you probably won't.
I would like to remind you here that entering only makes sense, if you intend to play the game in case you win it.
So if you're like "meh.. not really my game, but it's free so I'll enter anyway", you'll lower the chances of these games finding their way to being played - instead of sitting around in your library, forever unplayed.