http://sabertron.com/
Basically lasertag with swords. Multiple modes including health, one hit ko, easy, and more.
Really awesome, I'm getting some for sure.
They also have more info on their kickstarter page:
https://www.kickstarter.com/projects/levelup/sabertron-foam-swords-with-electronic-scoring
Oh man they look awesome. We should get some for the next Exilicon.