20 Worst Game Breaking Bugs & Glitches

Assassin's Creed: Brotherhood may be inferior to its magnificent predecessor, but it nonetheless held the line and proved that there was still value to be had in this game series’ world before the beginning of a patchy track record. In the years following, the games became copies of the same template, the quality and duration of gameplay diminished, and the rich story and characters floundered. 

Brotherhood continues the story of Ezio Auditore da Firenze from II, this time taking place during the Italian Wars, from 1500–1507. Ezio battles the Templars in Rome and attempts to rebuild the Assassin Brotherhood, wresting control of the city from the Templar-aligned Borgias family. This is a formidable foundation for a great game, but the speed of its development meant a number of bugs and glitches went either unnoticed or unattended to, resulting in a series of ugly stains on its otherwise strong reputation.

It is not uncommon to endlessly fall through the scenery into that black, sub-game void we all know and hate - with the only way out to restart the game. But the real game breaker was the tunnels: before Ubisoft released a patch, entering the tunnels resulted in several undesirable effects, including being ejected (making tunnel-based missions impossible), the game freezing up and forcing you to reset, or being desynched with the Animus (the machine you use to enter the past) and getting caught in a permo desynch loop. But it's still better than Revelations or Rogue...