12 Video Games Created By Accident
2. BioShock
Early on in BioShock's development, the team devised three pivotal concepts - drones, protectors, and harvesters. This trio eventually evolved into the Little Sisters, Big Daddies, and the Splicers.
Apart from those three elements, BioShock was totally different to begin with. Instead of exploring the aquatic terrain of Rapture, the story took place on a monster-filled spaceship. Originally, the story followed Carlos Cuello, who's tasked with finding and deprogramming a senator's daughter, after she's been brainwashed by a cult.
When Take-Two Interactive realised the setting and story wasn't working, they changed everything. This time, the developers envisioned BioShock taking place in an abandoned Nazi lab, which had been unearthed in modern times.
Although this plotline was abandoned, many factors were incorporated into the finished product, including plasmids, EVE, automated security systems, stealth, expositional audio recordings, and a consistent relationship with a character through a radio.
Director, Ken Levine, felt BioShock looked too cyberpunk, (which he regarded as cliched), so he changed the setting once more, this time to an underwater city. After that, it only required some more adjusting to get the BioShock we know today.