5. GTA San Andreas 'Hot Coffee' mod
Trust the Dutch — if there’s porn to be found in a video game, they’ll unearth it. The infamous 'hot coffee' incident occurred when a 37-year old hacker from the Netherlands discovered hidden code within Rockstar's GTA III: San Andreas. The code unlocked a new mini-game that saw the main character grappling unerotically with his girlfriend, after being invited in for some 'hot coffee'.
Bizarrely, this caused a storm of controversy across the globe — a situation that only worsened when Rockstar denied all knowledge of the hidden code. All copies of the game were subsequently recalled in Australia, to be replaced with ‘caffeine free’ versions.