Achron

Ooh, nerdy RTS game time! Just stumbled across a game called Achron. It is set like a typical strategy game, with units, objectives, commands and opponents. But, the key difference is that units and players can move through time as they go about trying to defeat their opponents. Here is a quick introductory video...

Here is another that shows both players taking the option of going back in time to thwart each others' designs. So much fun!