History GoodBadBugs / SimulationGame

* A glitch in ''{{Spore}}'' lets you abuse how the game sets the limits for creature widths to make asymmetrical creatures, with different hands on each sides, or different limbs on each sides. Eventually this was made easier by making it a legitimate game feature.

* In ''[[VideoGame/{{X}} X3: Terran Conflict]]'', the [[MacrossMissileMassacre ATF Skirnir missile frigate]] is a GameBreaker even by the standards of its own class, due to an extra zero in the damage values for its anti-capital weapon the Shadow missile. As a result, it puts out 650 megajoules of damage per warhead on an eight-warhead missile. In an unmodded game, the toughest ship has only 12 gigajoules of shielding. Do the math. Egosoft never bothered to fix this in ''Terran Conflict'' since you have to board and capture the Skirnir to use it, but what with the full-scale Argon-Terran war in the expansion pack ''Albion Prelude'', the bug was fixed so that Argon players wouldn't get their heads blown off the second a Skirnir showed up.

** ''VideoGame/HarvestMoonMagicalMelody'' had a bug which would randomly grant you infinite money. It isn't known how this happens however, and it renders the note for being poor LostForever as you can't lose money anymore.

** The Natsume-made game ''Harvest Moon Seed Of Memories'' had a glitch in the mobile version where you could [[GayOption marry the same gender]]. It was eventually patched out.

* The original ''VideoGame/TransportTycoon'' keeps cash on hand as a [[PowersOfTwoMinusOne 32-bit signed integer]], limiting your money to +/- 2.1 billion GBP (all other currencies are multiples of this base amount; USD = GBP x 2, JPY = GBP * 100 etc). It's possible to build a tunnel extending from one end of the map to the other, which would make the cost overflow. Shift-click to get a cost estimate, keep searching until you see something with a cost in the negatives, then build. Instant jackpot of 2.1 billion pounds. Did I mention this can be done shortly after the game starts? This was fixed in ''TransportTycoon Deluxe''.

** Other bugs that tend to be mentioned nostalgically: infinite magma floods, serial killer elephants, the dwarves' utter indifference to being on fire. Note that all of these were part of the legendary ''{{Boatmurdered}}''.

** In 0.42, Adventurers can now hand out drinks to NPCs, whom are all too willing to chug anything you give them. [[ExtremeOmnivore Emphasis on anything.]] So long as it's in a mug, they'll gladly down things like vomit, whole watermelons, stacks of weapon, hell, even the corpses of their former friends. One can even put two caged cats in a sack and stuff that in a mug and they'll drink it (or if you're feeling particularly evil, you can make them drink themselves.)

* The Norn genomes in the release version of ''{{Creatures}} 2'' had a flaw in their simulated neurochemistry, so that when a Norn walked into a wall, instead of getting the signal to turn round and walk away, they would often continue to walk into the same wall over and over. This habit became known as 'Wallbonking' and is considered a classic Norn trait among the fandom, even though a fixed genome and later games (mostly) eradicated the behaviour.
** This was far from the only problem in the ''{{Creatures}} 2'' genome -- the ArtificialStupidity was so rampant, it was dubbed "One Hour Stupidity Syndrome." While many programmers released [[GameMod fixes]] for this, which targeted various aspects of the genome, the original genome is still quite funny, in a schadenfreude kind of way. After one hour, the bugged genome would ensure that your Norn would become incredibly stupid, to the point of total paralysis.

* Most ''VideoGame/HarvestMoon'' games tend to have at least two or three bugs each - though this has become rarer since ''VideoGame/HarvestMoonTreeOfTranquility''. These are usually among the annoying kind, but a few fit in this category. Among them:
** [[VideoGame/HarvestMoonOriginalSeries The original's]] Day/Night system: Time seems to pass normally in an accelerated cycle, except for one thing - ''night will never end until you go to bed''. This means that you can clear your entire property, till and plant seeds on every available square, and water each and every one of them...in one night. The only downside is that some tasks can't be done after a certain time of day (most importantly, the shipping bin resets in the morning, so anything you throw in after the shipper won't count until then) - but for everything else [[TakeYourTime you've got all the time in the world]]!

** There were also (sadly removed) bugs involving individuals ''ordering'' someone to hurt them - fortress mayors sentencing themselves to be beaten when ''their own mandates'' failed, and assorted folk in Adventure Mode requesting their own assassinations.

** In 0.42, Adventurers can now hand out drinks to NPCs, whom are all too willing to chug anything you give them. [[ExtremeOmnivore Emphasis on anything.]] So long as it's in a mug, they'll gladly down things like vomit, whole watermelons, stacks of weapon, hell, even the corpses of their former friends.

*** The sponges have now been nerfed as they can be smashed into a pulp fairly easily with blunt weapons.

** ''HM1'''s Love glitch: The game's eligible brides will like you more when you talk to them every day, but talking to them more than once in a day won't do anything... in theory. Actually, if you walk out of her house, then back in, it counts as a new day. Pretty much mandatory for getting the best ending, which requires you to have a wife and a kid... [[WithThisHerring within three years]].

* Most ''HarvestMoon'' games tend to have at least two or three bugs each - though this has become rarer since ''Tree of Tranquility''. These are usually among the annoying kind, but a few fit in this category. Among them:
** ''HM'''s Day/Night system: Time seems to pass normally in an accelerated cycle, except for one thing - ''night will never end until you go to bed''. This means that you can clear your entire property, till and plant seeds on every available square, and water each and every one of them...in one night. The only downside is that some tasks can't be done after a certain time of day (most importantly, the shipping bin resets in the morning, so anything you throw in after the shipper won't count until then) - but for everything else [[TakeYourTime you've got all the time in the world]]!
** ''HM'''s Love glitch: The game's eligible brides will like you more when you talk to them every day, but talking to them more than once in a day won't do anything... in theory. Actually, if you walk out of her house, then back in, it counts as a new day. Pretty much mandatory for getting the best ending, which requires you to have a wife and a kid... [[WithThisHerring within three years]].
** ''HM 64'''s Horse Betting glitch: If you place your bets with the Mayor's wife, then exit instead of confirming, the bets will go through, but the money won't be taken out of your wallet, allowing you to bet on the horse race for free.

** ''HM DS'''s 1 Billion Gold glitch: Hiring the Fishing Sprites during Winter, then shipping junk items (items that ship for 1G each) during a day when they're working for you will set your money level to 1 Billion. There's a chance doing this will invoke a GameBreakingBug that will corrupt your save file, make this option a [[DeathOrGloryAttack Death or Glory Bug.]]
** ''Friends Of Mineral Town'': When stumbling upon an outdoor Rival Heart Scene, the clock will not restart until you leave that particular area. Stumbling upon such a scene with your fishing pole and basket in tow is an excellent opportunity to load up on lucrative fish and other items. Also, you don't lose stamina during Festivals, so you can power up your tools to full experience (except for the watering can, which can't be used while empty). Both glitches were removed in [[DistaffCounterpart More Friends]].

** ''A Wonderful Life'': Cook with Ruby Spice as the only ingredient, and it will create a duplicate Ruby Spice, which can be sold for a tidy sum. Sadly, they fixed this glitch in the DistaffCounterpart and the special edition.

** Magical Melody had a bug which would randomly grant you infinite money. It isn't known how this happens however, and it renders the note for being poor LostForever as you can't lose money anymore.

** Also, limbs (but not hands or feet) turn invisible if the starting joint isn't connected to the torso. Somebody made a whole range of [[RaymanianLimbs Rayman-based]] creatures this way! This glitch is also very commonly used to make creatures that perpetually hover above the ground (using invisible legs).

* The original ''TransportTycoon'' keeps cash on hand as a [[PowersOfTwoMinusOne 32-bit signed integer]], limiting your money to +/- 2.1 billion GBP (all other currencies are multiples of this base amount; USD = GBP x 2, JPY = GBP * 100 etc). It's possible to build a tunnel extending from one end of the map to the other, which would make the cost overflow. Shift-click to get a cost estimate, keep searching until you see something with a cost in the negatives, then build. Instant jackpot of 2.1 billion pounds. Did I mention this can be done shortly after the game starts? This was fixed in ''TransportTycoon Deluxe''.

** The game handles injuries to the neck rather strangely when they happen during worldgen. As in it doesn't seem to immediately realize you can't live with a missing neck. These mysteriously headless people then proceed to live their lives with no problem until they arrive at your fortress/meet your adventurer, at which point RealityEnsues, the game realizes its mistake, and they promptly [[PuffOfLogic drop dead]]. Something similar tends to happen with dwarves past their age of death, as they will die the exact second they enter your map.

* With 0.42's release, and the ensuing taverns, a possible bug resulted in cats getting drenched in dwarven booze if they came anywhere near a tavern. Then, since Toady One [[ShownTheirWork did his research]] in terms of cats cleaning themselves with their tongues, [[TheDevTeamThinksOfEverything]] and implemented it into the game, the unfortunate critter [[GargleBlaster dies horribly]].

** The already infamously buggy ''Harvest Moon 3D: A New Beginning'' had a particularly humorous one. If you're a passing acquaintance of the Harvest Goddess and [[https://www.youtube.com/watch?v=Ajuxif0uY90 you visit her on your birthday]], her final line of dialogue will be "<PAGE><FACE_GODDES><POS_RIGHT><FACE_ROUGH>Happy b". The text actually spills out of her text box due to the bugged script, causing the "irthday!" part to be cut off by the right side of the screen.

** Show in MadameWario's Let's Play of the game, if your toddler sees you cheating on your significant other, their relationship status with you will drop with other family members of the house (any family member will get pissed at you for cheating). This means you can attack your toddler and fight with them. Sadly, the fight-cloud animation doesn't work when fighting with a toddler (your sim will just be standing there), but the small dialogue window does show up in the corner saying your sim is "not to be trifled with".

* ''DwarfFortress'', [[PerpetualBeta due to its nature]], has numerous, numerous GoodBadBugs in its current release and has had many more in previous versions. Special mention goes to the following (some may be patched):

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