3: Tom Clancy’s Rainbow Six Vegas
Occupying a strange position, Rainbow Six Vegas was the long awaited awakening of the Rainbow Six franchise from cryosleep. This one however is markedly different from the earlier, much more realistic games, insofar as it plays more like a regular shooter on very high difficulty without any focus on realism. The game boasts just enough realism to be fun, the emphasis is on preparation and tactical movement, with careful preparation before entering any new room in the game.