I want to find an FPS game. I played it in 2009 on Windows XP, so the release date should be between 2004-2009.
It was Team based SinglePlayer (I suppose it had multiplayer, but idk).
A very similar game: Quake 4, but I think the graphics were a little bit better.
The most important thing that I remember is that there was a rocket launcher which could shoot multiple rockets at a time and they were following the enemy.
Also, there was a CTF game mode.