UGO has been playing a lot of Electronic Arts' Battlefield Heroes lately and you soon will be as well. Why's that? Well, it's free to play for one. And it's browser-based, which means that your creaking, four year old laptop might just run it. Also, the game features a unique mix of ideas pulled from sources as diverse as third-person action, MMORPGs and web-based social networking services. The result is a potent experience which threatens addiction almost as soon as your personally designed soldier starts to level up.