Achron is a new meta-time strategy game. Watch the videos.

Wow. My brain hurts so nicely watching this stuff. I really want to try this game. I haven’t seen something this mechanically original in a long time. And it looks like it might actually work. Their solutions to the classic time paradoxes are beautiful.

From the FAQ:

Q. Dude, paradoxes?! You know, grandfather paradox, units fighting side by side?
A. Paradoxes can exist, but since the window of time is limited (e.g., an 8 minute window) all events eventually fall off. A paradox will oscillate between its different states until one of the states reaches the edge of the time window, leaving the players locked into one of the two states. Example: in the case of the grandfather paradox (where you use a factory to build a tank, have the tank time travel to before it was built, and then use it to destroy the factory) you will play with the paradox until it ‘falls off’ the time window, at which point there is a 50/50 chance of either the tank lives and the factory is destroyed (because the tank destroyed the factory), or the factory remains and the tank goes back in time and is lost. All paradoxes are nicely resolved with time.