It's a Gundam MMO, a few years old, and the official service was cancelled way back. There's a private server now that I've been playing on for a few months. It actually recently got finished and is fully functional with all the features the official server had. For those who've never heard of it, it's sandbox-ish, with a skill system similar to Ultima Online, no levels. It's sorta like Eve Online in the sense that you buy/make your mobile suit, and when it's destroyed, it's gone for good. You have an actual human avatar though that can get off and walk around. As far as downsides, the interface and controls are kinda clunky, and some of the menus are in Japanese (though there's translations you can check out). There's not a whole ton of content either, mostly skilling up, and PvP. If you're a Gundam fan, it's a s***load of fun =D. If any of you guys wanna check it out, the site is
http://ucgoserver.com/ Oh! One of the Japanese players (there's a lot of Japanese players) made this video to promote the server. Check it out! =D
http://www.youtube.com/watch?v=SJ_z1wwZSRA