Do you like Rainbow 6? Then play SWAT 4. I cannot recommend this game enough. It's probably the only game out there that truly feels like you are an actual member of a SWAT team. From simple drug busts to hostage situations to taking down bank robbers, I have over 1000 hours in this game as there are a number of scenarios and situations in the game that change each time you play. You can even create your own missions and play others that other players have created online.
Unfortunately my original computer that I played this on died and I lost the CD keys when I got a new one. For years I have wondered why this game was not available to download anywhere. Well the wait is finally over. SWAT 4: Golden Edition which includes the Stetchkov Syndicate expansion is now available to download via GOG.com for $9.99. GOG.com is also having a sale on Police Quest, Police Quest: SWAT 1&2 and SWAT 3.
Here is a glimpse of SWAT 4 by Youtube user "FirstThirtyMinutes"
Also check out our review of SWAT 4 from all the back in 2005 from Jennifer Lam