15 Games to Play Before you Die.

The sequel to Half-Life, one of the most popular action games ever made, will feature the return of former Black Mesa research associate Gordon Freeman.

In Half-Life, the G-Man made you. In Half-Life 2, he used you to defeat Dr. Breen and start the Resistance. In Episode One, he's lost control.

Counter-Strike: Source is a must-have for every action gamer.

Day of Defeat: Source is a FPS style gamed themed about WWII with emphasis on the fight between Germany and the USA.

Garry's Mod is a sandbox mod for the Source Engine. Unlike normal games there aren't any predefined aims or goals. Players are given tools and are left to entertain themselves.

The Ship is a unique multiplayer PC game developed by Outerlight Ltd., created using Valve's Source engine. Set on a series of luxury, art deco cruise ships built by Mr X, this devilish game challenges you to kill or be killed.

The game where you build stuff. An open-ended, non-competitive, multi-player construction game. You build online with legos.

RTB is an addon to Blockland, and adds more bricks, accessories, game modes, admin/player options, and a lot more.

PuckIT! is an odd air hockey game built on the Torque Game engine.

GTA III implements sandbox-like gameplay, where the player is given the freedom to perform various activities in a large city, such as completing missions, exploring the city, committing criminal acts, or completing side missions.

Set in 1992, the game revolves around the main character, Carl "CJ" Johnson returning home to Los Santos after learning of his mother's murder. CJ finds his family and his old gang, the Grove Street Families, in disarray. Over the course of the game, CJ gradually unravels the plot behind his mother's murder while working to reestablish his gang and exploring his own business ventures.

Imagine a world where every choice and action determines what you become. Where you evolve in real time based on every little thing you do. Fable is an RPG action adventure unlike any you've ever dreamed of. And now more than ever - with extra quests, additional customization, and extended content - your destiny is yours to choose!

Wanna fly a helicopter, save lives and property, enforce the law, and make some money? Maybe do this in a city you've made yourself? If so, you've come to the right game. SimCopter provides you with the opportunity to gain points and earn money by flying helicopter missions, until you become the owner of a fleet of helicopters.

Build a theme park that makes all your guests happy. The object is to complete scenarios within certain guidelines in "x" number of years as well as keeping the guests happy along the way and maximizing profits. The game is 2D but extremely addicting.

Theme Hospital is a simulation computer game developed by Bullfrog Productions and published by Electronic Arts in 1997, in which the player designs and operates a hospital. Like most of Bullfrog's games, Theme Hospital is permeated by an eccentric sense of humor. The game is the thematic successor to Theme Park, a game also produced by Bullfrog.