"Halo is undeniably the best FPS ever. Become the last remaining Spartan Super soldier and fight for humanity. Now includes AI bot in multiplayer, be an elite, dual weapons and chain melee."
"2nd huge release. The 1st game revolutionised FPSs, it became the best game on PC. Become Gordan Freeman as you and your team of scientist unleach monsters on the world. Now has physics and better AI."
"Rainbow Six 3 (1st 1) is the best Live game. This game, which is actually a full blown sequel, makes you the leader of an anti-terrorist group. It has new co-op mode and a whole new game."
"You're a spy doing different missions, with lots of spy moves and gadgets, but the online mode pits spies vs. mercs with each having different gear. Spies have and objestive while mercs defend."
"This game is very manic. A spin-off of the PC game Unreal Tournament it is basically multiplayer modes, such as DM, CTF, Bombing Run and DOM. UC 2 is comming."
"Battle super humans in single and co-op campaign, but online you are such classes, like medics or engineer, teamwork is required to fulfil the objective."
"I don't like this one, but it is also very popular. Tom Clancy's third huge Live title you again fight terrorist. Its a mix of Rainbow Six 3 and Desert Storm."
"Counter Strike is the number 1 online PC game, but only 10th on Xbox Live. Its a very strategic and tactical shooter, where communication is key. The 2nd as yet another half-life (2) mod is comming."
"Another ninja game. You are a Japanese ninja assassin. Not exactly the most realistic game, but you can now play with a friend online with co-op mode."
"Juiced is another illegal street racing game, but has more than other standard ones. You have more mod options, the ability to clan vs. clan racing and putting your own car on the line."
"Battle aliens in different times in human past and history. But the famous multiplayer offers many modes, weapons and lotsa manic fun. Plus single-player co-op mode."