After getting some fun new toys for Christmas, [IceColdFreezie] set up this kill counter for Team Fortress 2. At first glance, we weren’t that impressed. It’s an Arduino and a few LEDs. Then we saw that it was counting the kills in binary. We’re not sure if it gets much geekier than that. You can download the source code and try it out yourself. Just don’t make more than 31 kills.