An interesting fact about the early GTA games is that they owe their success to a bug. The cop cars were supposed to behave nicely like in every other game, but due to a bug in pathfinding they just drive straight into the players car. So at least to some extend the whole billion dollar franchise owes its success to a bug: https://medium.com/@bdunn313/the-psycho-cop-bug-de9121335cf9