We also have these slick, Valve-provided forums for our use as well.

Easy to leverage and access!

http://gtm.steamproxy.vip/groups/thon/discussions/

NS2 is on sale in the Steam store. I bought it and love it, but have few people with which to play. I think it's a good middle ground for the interest of all of us. Check it out. The 4 pack makes the price of the game under $10.

http://store.steampowered.com/app/4920/

Fun, free, and available on Steam. Also very light on resources.

http://store.steampowered.com/app/206500/