Attention: For today only on Gamersgate.com, You can buy the multiplayer FPS/RTS hybrid Nuclear Dawn for a whopping 70% off ($7.50). It uses Steamworks, so you can activate it on your Steam account.
http://www.gamersgate.com/DD-NDAWN/nuclear-dawn
The reason why I'm posting this is because Steam is having a Nuclear Dawn sale and free weekend starting RIGHT NOW. The thing is, on Steam it's only 40% off ($11.99) instead of 70% off ($7.50). If you want to save a few bucks, simply buy the game on Gamersgate, and then activate it on your Steam account. Bada bing, bada boom.
Nuclear Dawn supposedly has a very nice community and they're actively reaching out to gamers to expand their player base. Even though there's not a lot of players right now, the Steam free weekend will definitely change that, and the developers are constantly updating and supporting this game.
Hope to see you guys online.
Edit: formatting