This is a real time strategy, action, top down shooter. You control a small army over the course of 10 seconds. You control a unit for 10 seconds, as which point time rewinds and you are prompted to select a second unit to control for 10 seconds while the first unit is now repeating what it did last time. After all units have been given orders in this way, your army will have quickly and efficiently destroyed every enemy in a mere 10 seconds. There are many levels featuring 6 different unit types, each with it's own special moveset that work with each other in unique and tactical ways.
10 Second War is a really neat game. The way the game plays, the concept, the simple graphics, everything is really excellent. Now make a campaign and add a cool story.