The bigger the game, the more chance it'll have a glitch. Grand Theft Auto: San Andreas is HUGE, so here's a BIG glitch. Well, not quite, but man is it cool. the start of the game ). Kill all 4 people inside. Now, enter the Jet-Pack code ( if you don't know it, go look it up). Go up to the door with the Jet-pack equipped. Now just fly up. Fly! You'll go through a hole in the ceiling. All around you is pitch black. Now start exploring. It'll be very hard and long, but many cool things can be found with enough patience!