Halo: Combat Evolved
Not only is this easily the best of the Xbox launch games, but it's easily one of the best shooters ever, on any platform.
Command & Conquer: Red Alert
There are new weapons, enemies, and levels, but the game engine and basic play are essentially the same.
Crysis is a Sci-Fi FPS game for the PC in which mankind must struggle to survive in the face of an alien invasion.
Unreal Tournament (1999)
Unreal Tournament is the most complete first-person shooter available.
Gone Home is a first-person game entirely about exploration, mystery, and discovery.
Starcraft II: Wings of Liberty
The first of three sequels in Blizzard's legendary sci-fi real-time strategy series focuses on the Terran faction.
What really makes Battlezone so special is the way it blends the adrenaline rush of first-person action games with the strategy and resource management of Red Alert.
FreeSpace 2 is one of the best space sims ever made and is a solid candidate for game of the year.
Half-Life is the closest thing to a revolutionary step the genre has ever taken.
Despite a rather short campaign and a disappointing storyline, Halo 2 is an exceptional shooter that frequently delivers thrilling, memorable, and unique moments in its online, co-op, and single-player modes.
Unreal Tournament 2004
No other multiplayer-focused action game has this much to offer.
The Chronicles of Riddick: Escape From Butcher Bay
It's easily one of the most-impressive games on the Xbox and seems destined to be remembered as the most inspiring collaboration between Hollywood and the gaming industry yet.
Cavedog has done a commendable job of taking the basic mechanics of real-time strategy and using them to create something new.
Command & Conquer
Overall Command & Conquer is a great strategy game and easily the best available on the PlayStation.
If you don't like Descent at least a little bit, make no mistake, there is something wrong with you.
Dark Reign: The Future of War
One of the most impressive games released this year in any genre.
Dino Crisis 2
Dino Crisis 2 avoids the stereotypes of the genre and delivers one of the most refreshing takes on the third-person action shooter to date.
Half-Life 2 is a very impressive and engaging shooter, and a faithful follow-up to one of the greatest PC games of all time.
Terra Nova: Strike Force Centauri
A breakthrough in outdoor 3-D action sims, Terra Nova gives mech games and flight sims something to aspire to.
Serious Sam: The Second Encounter
You'll find virtually everything there is to like about action gaming in the stunning sequel to Serious Sam.
It doesn't stray far from the blueprint created by its predecessors, but it is, without a doubt, the best game to ever adhere to that formula.