Intense Base Assault with Tanks and GDI Units in Yuri's Revenge

OpenRA is an open-source engine that recreates classic RTS games from the Command & Conquer series and Dune 2000. It rewrites the original engine from scratch, supports modern operating systems, online multiplayer, improved graphics and modifications, but requires the original game files for full functionality.

C&C Red Alert Redux is a remake of Red Alert based on Generals Zero Hour. The mod features Allied and Soviet factions from the original C&C Red Alert game, as well as over 60 maps for single/multiplayer gameplay (including 20 maps for naval battles) and 6 campaign missions.

Generals Zero Hour Continue is a mod for Generals Zero Hour that represents a complete reimagining of the game. The mod adds a new campaign, expands content for all factions and adds new ones, restores cut elements from the original, and introduces completely new mechanics, including naval battles and a prisoner system.

Half-Life: Urbicide is a mod with 11 atmospheric maps for single-player gameplay. The events take place during the Xen invasion of Earth. You take on the role of Bruce, a warehouse manager trapped inside a building with a colleague, while his fiancée Rebecca attempts to rescue him.

Half-Life: Static Interference is a mod for Half-Life in which you play as M. Hood, a security guard at the Black Mesa complex who found himself at the epicenter of the resonance cascade.