Game Types:
Instant Action - Free for all.
Team Instant Action - Cell vs. Marines instant action. Both human for those of you who don't know who cell are(every one has a nanosuit).
Crash Site - Both teams fight over the crash site. Basically King of the Hill.
Capture the Relay - Capture the flag. Only instead of a flag, it's a relay. One in each base.
Assault - One team gets nanosuits and pistols while the other team gets stronger weapons with laser pointers but no nanosuit. You only have one life per round.
Extraction - You need to get two alien bio-ticks(nano pods) from an location and bring them back to the helicopter. One side defends, other has to get ticks.
Game Modifier:
Standard - Regular game play. Suits, modifiers, etc.
Classic - No Nano-Suits.
New Recruits - Level 10 and under only.
Pro - Hardcore mode. 50% health for everyone, no minimap, while still being able to use Nano-Suit.
Solo - No squads. Server puts everyone on random sides.
Fast Rounds - Little time between matches.
Single Life - You only live per round.