Good Bad Bugs / Dragon Quest

• Dragon Quest II:
  • The NES version had the cursed equipment glitch, used mainly for the Sword of Destruction. If you equip a cursed item (such as the cursed Sword of Destruction) and get it removed via House of Healing, you keep its attack power without the drawback of constantly missing turns until you reenter your Equip screen or you level up. If you go to the Equip screen or you level up, the numbers reset to their proper values.
  • In Wellgarth, you can fight an Evil Clown in a jail cell. Upon winning the battle, you will always receive a Staff of Thunder which you can sell. If you save and reset the game, the Evil Clown will respawn and will still drop the Staff of Thunder. Constantly fighting, selling the Staff, saving the game and refighting the Evil Clown is a good way to farm gold.
• Dragon Quest III: The Item glitch. The glitch works like this- form a party. Allow one member to die and then go to Luisa's and remove the dead character. Get a new character and then allow 3 party members to die. Normally in game play, if you have three dead party members the game will not allow you to switch out the living party member for a dead one at Luisa's. However, if the living party member has the Numb status, then the game will let you exchange the character for a dead one. You will now have a party of all dead characters. Go to the overworld and just take a few steps and watch your inventory go nuts.
  • The Game Boy Color version also has a balance breaking bug in the Pachisi minigame. If you play the game as the Hero, land on a random chance space and it lowers a stat by one point, the next battle you get into will award an absurd amount of experience; enough to boost you 30 or 40 levels at once and make the rest of the game trivially easy.
• Dragon Quest V: The Playstation 2 version is so incredibly broken that it's possible to skip 95% of the plot, walk past of the majority that isn't skipped, and "kill" the final boss by running away from it, since the game reads that as winning the battle. Since choosing who to marry is skipped, the game unsurprisingly defaults to Bianca.
• Dragon Quest VII: A programming error in the remake causes Kiefer's defense to increase to a staggering 579 upon reaching level 50.
• In Dragon Quest IX, due to a memory bug that pops up in their semi-Randomly Generated Levels of a certain size or larger, it's possible to get floors with no monsters at all... or monster parties that all include a certain monster type. If it's one of those that drops the most gold in the game or their second-to-the-best Metal Slime, it makes the going MUCH easier than the developers intended.
• Dragon Quest Builders 2: Normally, the only way to obtain extra seeds is by digging them up in the wild. However once you recruit a Hunter Mech or a Killing Machine they will only use up one seed to plant 9 spaces in your fields. As of this writing, there's nothing stopping you from digging up the 9 seeds yourself after the machines have planted them, so a single seed can be multiplied indefinitely.