SWAT 4 is the perfect game for those who love strategy but not the admin of RPGs, combat but not the chaos of deathmatch, a backstory but not an epic movie adventure. Realistic and grubby locations in Los Angeles, California have a real vibe and attention to detail and can be played in single player mode with four AI officers, or in Multiplayer mode with real players. I think it is essential to play SWAT 4 with the Elite Force mod (https://www.moddb.com/mods/swat-elite-force) which enabled features of the game that were semi-developed but unavailable in the final release and improved many aspects of the gameplay. The GEM (https://www.moddb.com/mods/swat-4-graphical-enrichment-mod) and Remake mod (https://www.facebook.com/Swat4SpecialEdition) are also worth investigating.