> So, it does break gameplay balance. That is one way to see it, another is to add extra depth to gameplay by introducing secret areas only accessible through

> So, it does break gameplay balance. That is one way to see it, another is to add extra depth to gameplay by introducing secret areas only accessible through gaps that you can only cross if you move diagonally. Designers often acknowledged these bugs, especially in older games. The classic Tomb Raider games, for example, has several secrets only accessible through outright breaking the engine. One very obvious example is in TR1 a health pickup is only accessible if you keep jumping upwards at a corner of a pillar which causes Lara to move forward a single unit and eventually, due to some collision bug, she teleports at the top of the pillar which is otherwise inaccessible... and the only reason you could know about this health pickup is because due to the painter's algorithm used to draw the level, sometimes under some angles the pickup is drawn in front of the pillar even though it should be invisible. Also strafe-jumping has been a common tactic in FPS games (especially multiplayer games) to the point where games reimplement it in engines that otherwise work 'properly'.