10 Video Game “Mistakes” That Were Totally Intentional
7. That Portal Level
One of the Portal Challenge levels can be completed in just a few seconds by exploiting the game's mechanics with super precise timing and portal placement. Players believed this to be an oversight on the part of the developers, but they actually knew about the exploit and decided to leave it in anyway.
The development team had discovered the strategy during testing but actually explained in the in-game commentary that since it took such a lot of skill and crazy timing to pull off, they wanted to leave it in for the very best and smartest players to discover.
Funnily enough, if you want to get the gold medal for finishing that level as quickly as possible, you actually need to perform the exploit. It's simply not possible to finish the level fast enough using the traditional method.