Stainless Games’ 1997 racing game, Carmageddon, quickly earned a reputation for its controversial gameplay mechanics, which saw players rewarded for running over pedestrians. Its release coincided with the first Grand Theft Auto title, which also featured similar violent themes. However, there was something about the transition to 3D that made the experience feel even more gruesome than its 2D counterpart.
As a result, the game was banned in the UK for nearly a year until the developers opted to replace the human pedestrians with zombie-like creatures that spewed green blood. The German release went even further, with the zombies replaced by robots that leaked black oil. Despite these modifications, the game was still slapped with numerous 18+ ratings, giving it a seemingly mature reputation that belied its controversial content.
Number 4. No More Heroes