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Empires: Dawn of the Modern World is a 2003 real time strategy game for the PC

Battlefield Vietnam is the second video game in Electronic Arts' Battlefield franchise after Battlefield 1942. The game was developed by the Swedish company Digital Illusions CE and published by Electronic Arts on March 15, 2004 in North America and days later in other parts of the world. Battlefield Vietnam takes place during the Vietnam War. It is first-person shooter (FPS) games and features a large variety of maps based on historical settings, such as the Ho Chi Minh Trail, Battle of Hue, Ia Drang Valley, Operation Flaming Dart, The Battle of Khe Sanh and Fall of Saigon.

As a relatively straightforward third-person shooter, the most distinguishing characteristic of Kill Switch is its cover system, a mechanic that has the player character taking cover behind objects and around corners in a manner similar to Namco's own Time Crisis series of light gun shooters as well as Koei's third-person shooter WinBack and Konami's stealth game Metal Gear Solid 2: Sons of Liberty. However, Kill Switch was the first third-person shooter to feature the cover system as its core game mechanic, and introduced the blind fire mechanic to the cover system.

The Colin McRae Rally 04 DR needs to be completed at some point

Rise of Nations is a real-time strategy computer game, developed by Big Huge Games and published by Microsoft on May 20, 2003. The development of the game was led by veteran Brian Reynolds, of Civilization II and Sid Meier's Alpha Centauri. Concepts taken from turn-based strategy games have been added into the game—including territories and attrition warfare. Rise of Nations features 18 civilizations, playable through 8 ages of world history.

Stop the invasion of Naboo in this Star Wars space combat game.

"Mysterious Journey II, also known as Schizm II: Chameleon, is an adventure game developed by Detalion, published by The Adventure Company, powered by Lithtech: Jupiter, and the sequel to Schizm: Mysterious Journey. Like the earlier game, the plotline was authored by acclaimed Australian science fiction writer Terry Dowling. While Schizm utilized 360 degree panoramas, Mysterious Journey II uses a first-person shooter interface." - Wikipedia description

The first fully three-dimensional real-time strategy game. Released in 1999.
Other parts of the series are Homeworld: Cataclysm (2000) and Homeworld 2 (2003).

Dungeon Keeper 2 is a 1999 fantasy RTS game from Electronic Arts