In celebration of the recent release of Dark Nebula – Episode Two [99¢], developer 1337 Game Design has dropped the price of the original installment to free. If you don’t own Dark Nebula – Episode One [Free] yet, you seriously need to stop whatever it is you’re doing and download it. Unfortunately it’s over the 20MB limit for 3G app downloads so iPhone users will have to find some WiFi, but thankfully the game will be free all weekend so you’ve got plenty of time.

On the surface, the Dark Nebula games are just tilt controlled ball rollers, but in actuality they are so much more than that. The production value of both games is flat out insane, with amazing graphics, excellent sound, and masterful level design. Episode One will likely only take you an hour to complete, but it will be one fantastic ride.

We have reviewed both Episode One and Episode Two if you want to check them out, but really, you should just download the first while it’s free and immediately pick up the second if you enjoy it as I think the sequel is even better than the original.