5. Gears of War 3
If you want a game that makes you invested in it both emotionally and mentally then Gears of War 3 is the one you want. It is undoubtedly one of the best thriller games you can come across in XBOX 360. It includes the players exploring a wide variety of beautifully designed environment with brutal encounters and a multiplayer mode. What makes this game stand out is the longevity of the game’s number of achievements that pushes the players to their limits.