Well, first of all, I can't say it's not original. While most of participants were fiddling with taking away control over player in their games, you built a damn reactor and put the player inside it. I dig this idea. Is it fun though? I wouldn't say so, sadly. Seems like it got lost somewhere between a clever "8 ball pool-like" take and more serious simulation game, it just doesn't fit and feel right in any category. And the controls doesn't help - especially if you're on a laptop, playing with a touchpad :P Nevertheless, there's a lot of great work put into this, congrats on finishing on time! :)
EDIT: Oh, I forgot to mention - you're hiding the mouse cursor and not showing it in the ingame menu, making it pretty unusable.