2. Call of Duty: Modern Warfare 2--Javelin Glitch
An old glitch in Call of Duty: Modern Warfare 2 allowed a player to “cook” an FGM-148 Javelin--or in layman’s terms, prime a missile launcher to fire without actually firing the weapon. Although the player could then only run around and physically hit enemies in the face to keep the glitch alive, the trick turned the player into the digital equivalent of a suicide bomber. For as soon as an enemy shot the player dead, kerboom – the “cooked” missile launcher would explode. If the kill was fairly close-quarters, the player’s attacker would usually die as well.
3. Daggerfall / Oblivion / Skyrim
Every major release in Bethesda’s Elder Scrolls series seems to come with some game-breaking exploit for creative players. Daggerfall? Park your player in a store and rest until the store closes. The shopkeeper disappears and you can loot as much expensive gear as you can carry--and don’t forget to return to the store during normal hours to sell the vendor his or her stuff back!
Oblivion? Prior to Bethesda's patching the glitch, players were able to kill and repeatedly loot the body of an NPC named Dorian over in the Imperial City. Each successive loot gave the player free gold, and a player could even boost the amount of gold per loot by bribing Dorian repeatedly prior to killing him.
Skyrim? This one’s almost too easy: Use enchanting to create a weapon that boosts your alchemy, and then use your fortified alchemy to create a potion that boosts your enchanting. Rinse, wash, repeat--you’ll be able to enchant a weapon that can one-shot anything in the game before you can even say “Dovahkiin.”
4. Diablo / Diablo II
One of the unique joys of Blizzard’s first game in the Diablo series was that its multiplayer sessions saved your characters on your computer, not Blizzard’s servers. Not only could you hack the heck out of your character to make him or her practically godlike in a multiplayer session, but you could also save other players’ characters down to your system and play as them in later sessions. Absolutely crazy.
And where do we begin with Diablo II? How about the fact that bots actually work, and work well, within Blizzard’s multiplayer service? Set up your AI bot to kill bosses all night long and reap the rewards with your “actual” character later. This method takes a bit more time than, say, loading the weapon blatantly into your character’s inventory using a Diablo-style trainer program, but it achieves the same, unstoppable result.