UNDERTALEMods
UNDERTALE
UNDERTALE mods
A mod changes the game itself. It needs something to load it, it may need other mods first, and it only works on the versions its author built it for.
386 mods, most downloaded first · newest update 13 Oct 2026
- Undertale but only Gaster can read (wingdings mod)by BilliewastakenGame filesupdated 5 mo ago
- Undertale: Challenge Medal Editionby Luigi23Game filesupdated 5 mo ago
- Undertale But You cant readby TrezosDevText changesupdated 5 mo ago
- Undertale Genocide Bosses with random attack orderby SomeChileanGuyGameplayupdated 5 mo ago
- Undertale With A Boss Menuby GLAMOROUS METTATONGame files / Other/Miscupdated 5 mo ago
- DELTATRAVELER But Every Room Makes you 25% Fasterby thechipthatislitGame files / Other/Miscupdated 5 mo ago
- Undertale but it's [insert percentage and color]by Stecca6663Gameplayupdated 5 mo ago
- Undertale BUT NERFEDby mateo92omgGameplayupdated 5 mo ago
- genocide helperby mjm12281444Gameplayupdated 5 mo ago
- Known Buildby qwertyhbeny64Game files / Other/Miscupdated 5 mo ago
- Undertale but x10 hp and x2 defby mateo92omgGameplayupdated 5 mo ago
- Undertale AI - Player2by Stecca6663Gameplayupdated 5 mo ago
- Underbrailleby MasenVerseGame files / Other/Miscupdated 5 mo ago
- UnderRuined: Undertale, but I can kinda mod.by gameORANGE!!Game filesupdated 5 mo ago
- Undertale but it's 100% unchangedby MJLB2010Game files / Other/Miscupdated 5 mo ago
- Undertale, but the musical is always playingby mu1ho483Effectsupdated 5 mo ago
- UNDERTALE But it's 25% inputby blacklambCZGameplayupdated 5 mo ago
- UNDERTALE Encounter Randomizerby blacklambCZGameplayupdated 5 mo ago
- Undertale Cheat Menu!by GLAMOROUS METTATONGameplayupdated 5 mo ago
- UNDERTALE but hit = 1.1225% more greenby gabriel the gabberEffectsupdated 6 mo ago
- Undertale but its 10% more piss yellowby MrMcFastezEffectsupdated 6 mo ago
- Undertale, but it's 12% red, 3% yellow, 8% pink...by AliceDC11Game files / Other/Miscupdated 6 mo ago
- UNDERTALE but 75% darkerby Migo911Game files / Other/Miscupdated 6 mo ago
- Undertale but it's 100% lesbianby AliceDC11Game files / Other/Miscupdated 6 mo ago
- Undertale but it's 100% transgenderby AliceDC11Game files / Other/Miscupdated 6 mo ago
- Undertale but it's 100% gayerby AliceDC11Game files / Other/Miscupdated 6 mo ago
- Undertale but its 100% more 25% Red and 75% Yellowby CORRUPTED_GAMEZGame filesupdated 4 mo ago
- Undertale but is 50% more CiblesGDby Agente 1.3Game files / Other/Miscupdated 6 mo ago
- 25% Red and 75% Yellowby temporestGame files / Other/Miscupdated 6 mo ago
- Undertale but it's Upside Downby SurfyCrescent97Game files / Other/Miscupdated 6 mo ago
- Undertale But All Dialogue Makes You Fasterby GLAMOROUS METTATONGameplayupdated 6 mo ago
- Undertale: Rebalancedby XmillGameplayupdated 6 mo ago
- Undertale 25% Redder 75% Yellower modby Xp360Game files / Other/Miscupdated 6 mo ago
- True NG+!by Xp360Game files / Other/Miscupdated 6 mo ago
- UT with 3 (technically four) added dead pixelsby MrSirIrishBugGame files / Other/Miscupdated 6 mo ago
- Undertale but it's 25% redder and 75% yellowerby AliceDC11Game files / Other/Miscupdated 6 mo ago
- Undertale but 12.4378932489856% more oloby ElectricFuzzballEffectsupdated 6 mo ago
- 50% opaque random colorsby gameORANGE!!Game files / Other/Miscupdated 6 mo ago
- DR Stat Growthby DeltaTaleGamer29Game files / Other/Miscupdated 6 mo ago
- Undertale Anniversary Patch Recreation (JA&EN)by houkou_onchiGame filesupdated 6 mo ago
- Undertale: But You can't gain Expby DeltaTaleGamer29Gameplayupdated 6 mo ago
- undertale but everything is craply tinted purpleby turkey sandwich99Effectsupdated 5 mo ago
- Undertale Asgore Genocide Modby SomeChileanGuyGameplayupdated 6 mo ago
- Undertale Compressed soundsby papayas67Game filesupdated 6 mo ago
- 100% greenerby Trans_BatgirlGame filesupdated 6 mo ago
- UNDERTALE - Room Speed Randoby Story_Of_UndertaleGame filesupdated 3 mo ago
- Manual true resetby TTOOmiaGame filesupdated 7 mo ago
- Not Enough Gaster (NEG)by CORRUPTED_GAMEZGameplayupdated 7 mo ago
386 mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.