Europe in Ruins takes the fast paced, intense and surreal combat that you've come to know from Company of Heroes and combines it with persistent environment, ever changing meta-gameplay and ongoing war. The modification sees you creating and commanding your very own battalion in which you can customize with any units and upgrades you wish; CoH strategy has never had so much choice. Not only do you get to build up your battalion, but as you units battle, they will gain and retain all the experience they earn, carrying over from battle to battle; going from green to elite!

Fall from Heaven II is a dark fantasy mod for Civilization IV. The Age of Ice has ended, what is left of the once great empires of man have formed into small tribes, ready to rebuild and retake that which was lost. But the world is not empty. Hordes of barbarians await these new civilizations. Wild animals stalk hapless scouts and reckless emissaries. Giant spiders lie in patient wait in the jungles and the forests waiting for their prey to take that last, fatal, step.

The main attraction of Median XL is the brand new skill trees, 30 skills per class, providing a whole new experience. The mod also offers a new base item setup with 7 quality tiers, 480 uniques, 310 runewords, a new affix pool and gem/jewel stats, honorific items and many new and powerful crafting recipes. All this would be for nothing without the monster AI modifications and new abilities, elite and heroic monsters with even more powerful skills, and for advanced players 30 new uberquests based on Diablo lore await you.

Bring realism to the battlefield is the focus of Project Reality. This includes adjusting various game play elements including physics, visual effects and overall game play formats. Along with changes to how the game handles, the Project Reality team has introduced British, Insurgent, IDF forces, Canadian and Russian factions each with new units with more to come. This mod is not for the faint of heart and wimps, due to the steep learning curve players will face when thrust into the virtual battlefield. This is the real deal.

GMod is a Sandbox Modification that allows players to pose ragdolls, meaning you can position people from HL2/CS/DoD and change their faces. A big comic book creating community has popped up around this feature. GMod can also be used to build whatever you can think of. Take props from HL2/CS/DoD and weld them together to make walls. Axis a wheel to it to create a working car. Rope some cans to the back. A big contraption creating community has popped up around GMod - creating such things as Rube Goldberg devices, catapults, cannons, bridges etc.

Complex is a free advanced game modification based on Homeworld 2 game engine. Designed for players that like having long, technical and complex game matches; it's recommended only for H2 professional gamers, not for who's searching quick deathmatch. Complex tries to expand all features (research, technologies, abilities, weapons, subsystems, unit characteristics and physics) of the original game without change its game structure.

Defense of the Ancients is a custom scenario for Warcraft III, based on the "Aeon of Strife" map for StarCraft. The objective of the scenario is to destroy the opponents' "Ancient". The two teams' ancients are heavily guarded structures at opposing corners of the map. Players use powerful units known as heroes, and are assisted by allied heroes and AI-controlled fighters called "creeps". As in role-playing games, players level up their hero and use gold to buy equipment during the mission.

Red Orchestra is the award winning Unreal Engine mod that pits players in scale combat of the most intense and grueling warfare in history; the Eastern Front conflict of World War II. Real missions set in real scale settings from elite tactical units vieing for control of strategic industrial assets in close quarter combat, to brutal heavy infantry assaults and bayonet charges to take tactical objectives, to heavy mechanized armor units battling for strategic control of entire cities in blistering exchanges of fire power. RO delivers unprecedented tactical realism.

Natural Selection blends first-person combat with real-time strategy. It features intense "marines vs. aliens" teamplay, where one marine can become Commander. The Commander plays from a top-down perspective and leads live players. The aliens can evolve upgrades like "Cloaking" and "Scent of Fear", and can change lifeforms to run on walls, fly, and even devour marines whole. NS has atmospheric indoor sci-fi environments full of steam and smoke, and features custom orchestral music from the award-winning Jeremy Soule.

Desert Combat is a popular modification for Battlefield 1942 created by Frank Delise, Brian Holinka and Tim Brophy. Set in Iraq during the first Gulf War, DC featured many new weapons and maps for both the Conquest and Capture the Flag game types. Desert Combat won many awards for its polished gameplay and features. In 2004 the developers of the mod were acquired by Digital Illusions CE otherwise known as Dice, the original team split and a final version was released in 2004.

Arguably the most well known and successful mod of all time, Counter-Strike puts the player in the shoes of terrorist or counter-terrorist units. The mod is team-based with both sides having access to different guns and equipment, as well as different abilities. Maps have different goals such as: hostage rescue, assassination, bomb defusion, Terrorist escape, etc. Intense, frustrating, exhilarating multiplayer combat awaits those who attempt to survive and win each round of gameplay.

While most believe Half-Life was the birthplace of TFC it actually begun its life as a Quake mod way back in 1996. The premise of the game is a class-based battle between opposing sides, Red and Blue. Players are defined by which class they select (i.e., Medic, Sniper, Soldier, Demoman, Pyro, Spy, Heavy, Scout or Engineer), with each class having strengths and weaknesses. Each class also has unique weapons (e.g., Pyro has the flamethrower and Heavy has the minigun) and abilities (e.g., scout being able to run the fastest).