Undertale versions and bytecode - UnderminersTeam/UndertaleModTool GitHub Wiki
| Undertale version | Bytecode | GMS version | MD5 checksum of data.win | Platform | Other notes |
|---|---|---|---|---|---|
| v1.00 | 14 | 1.4.1567 | d0822e279464db858682ca99ec4cbbff | (Windows, Steam) | |
| v1.00 | 14 | 1.4.1567 | b8937c236b4cd2ef6de3513f5be282d1 | (OSX, Steam) | |
| v1.001 | 15 | 1.4.1690 | cd48b89b6ac6b2d3977f2f82726e5f12 | (Windows, Steam) | |
| v1.001 | 15 | 1.4.1690 | ee6560271ac91ef9ce564e64102d449c | (Windows, GOG) | |
| v1.001 | 15 | 1.4.1690 | dd9179255566e722f7a709c56ace912a | (OSX, Steam) | |
| v1.001 | 15 | 1.4.1757 | 88ae093aa1ae0c90da0d3ff1e15aa724 | (Linux, Steam) | the first Linux release |
| v1.001 | 15 | 1.4.1763 | 2a840c78198d5d0c14fe25dfd44f1b6c | (OSX, Steam) | there were multiple OS X updates at the same version number - listed in order of releases |
| v1.001 | 15 | 1.4.1763 | f9c72be740313c4dfa3af5e71760d12f | (OSX, Steam) | |
| v1.001 | 15 | 1.4.1763 | a3aedacc024c96df05cf262a8f60770c | (OSX, Steam) | |
| v1.001 | 16 | 1.4.1539 | e3a0ec9e30493a1c08818755d8a4ae0d | (PS Vita) | |
| v1.001 | 16 | 1.4.1539 | 21b4c0e0f8f53dc6515e0b4673b14031 | (PS4) | initial PS-Vita and PS4 releases |
| v1.01 | 16 | 1.4.1539 | ece5d15dff0ff5c20a94d3dc78a30361 | (PS Vita) | No PC version |
| v1.02 | 16 | 1.4.1539 | d703c5eb2f4fd911d6d5596fe52cf3ca | (PS Vita) | No PC version |
| v1.03 | 16 | 1.4.1539 | 183096942ea8a0ad1792c7ba21995372 | (PS Vita) | No PC version |
| v1.04 | 16 | 1.4.1539 | 040dceb4cfb156f8d58a88e1f40cad49 | (PS Vita) | No PC version |
| v1.05 | 16 | 1.4.1539 | 856219e69dd39e76deca0586a7f44307 | (Windows, Steam) | |
| v1.05 | 16 | 1.4.1539 | c138a67154b6185c710a3778cacb22d4 | (OSX, Steam) | |
| v1.05 | 16 | 1.4.1539 | 0ecaf026e3357a98c98245932ac8e536 | (PS Vita) | No Linux release |
| v1.05a | 16 | 1.4.1539 | 0bf582aa180983a9ffa721aa2be2f273 | (Windows, Steam) | |
| v1.05a | 16 | 1.4.1539 | 35d423183188c70b5097827930dd7d7e | (Linux, Steam) | |
| v1.05a | 16 | 1.4.1539 | 4d40626978f93b5ddca71586ad670d46 | (OSX, Steam) | |
| v1.05a | 16 | 1.4.1539 | 6a51aefc263305791b37eba33ed5707c | (OSX, Humble Bundle) | |
| v1.06 | 16 | 1.4.1539 | 582795ad2037d06cdc8db0c72d9360d5 | (Windows, Steam) | |
| v1.06 | 16 | 1.4.1539 | ba93da4d380b188e7397c5db46b6e508 | (Linux, Steam) | |
| v1.06 | 16 | 1.4.1539 | ae5b21eaa89f162eed788390bccfe0ca | (OSX, Steam) | |
| v1.06 | 16 | 1.4.1539 | 627da8a0368392204d2af4b5b15f4f7f | (Windows, GOG) | |
| v1.06 | 16 | 1.4.1539 | 472303740be739acf4377e00263f9fec | (Linux, Humble Bundle) | |
| v1.06 | 16 | 1.4.1539 | 2da79c38d342b802a142deac34124bb6 | (PS Vita) | |
| v1.07 | 16 | 1.4.1539 | cd7702660742410cfe08cf9e88376a97 | (PS Vita) | No PC version |
| v1.08 | 16 | 1.4.1539 | 5903fc5cb042a728d4ad8ee9e949c6eb | (Windows, Steam) | |
| v1.08 | 16 | 1.4.1539 | e996649a751e5dc5182b8416168042b5 | (Linux, Steam) | |
| v1.08 | 16 | 1.4.1539 | 5cdb1e4dba5847bf92d7bf8f867952aa | (OSX, Steam) | |
| v1.08 | 16 | 1.4.1539 | 8d2e7d83f45e3f9c4c166fdc9ac18eb1 | (PS Vita) | |
| v1.08 | 16 | 1.4.1539 | Unknown | (PS4) | |
| v1.08 | 16 | 1.4.1539 | ff4f10d0434b332f46e1f35a900ec862 | (Collector's Edition/Windows 10 store edition/Humble Bundle/GOG/Xbox Game Pass [not the Xbox One version]) | |
| v1.08 | 16 | 1.4.1539 | a6036317aa1d668bdd9ec3669e6c266c | (Linux, Humble Bundle) | |
| v1.08 | 16 | 1.4.1804 | dc0f9737c6bbc22902792c3c7e6dcadd | (OSX, Humble Bundle) | |
| v1.08 | 16 | 1.4.1804 | b4abe58dddb699ab81717e8e21254a38 | (OSX, Steam) | |
| v1.08 | 16 | 1.4.1804 | fc049850856dea4ef1427bbf5653fc47 | (OSX, Steam) | |
| v1.09 | 16 | 2 | 427520a97db28c87da4220abb3a334c1 | (Nintendo Switch) | No PC version the initial Nintendo Switch release |
| v1.10 | 16 | 2 | cf8f7e3858bfbc46478cc155b78fb170 | (Nintendo Switch) | No PC version apparently this was just a version bump (see discussion) |
| v1.11 | 16 | 2 | 113ef42e8cb91e5faf780c426679ec3a | (Nintendo Switch) | No PC version (yet?) this was the recent patch to fix the save files getting removed bug on Switch (see discussion) |
| v1.11X | ? | 2 | Unknown | (Xbox) | No PC version the initial Xbox release |
| v1.12X | ? | 2 | Unknown | (Xbox) | No PC version presumed to fix event order issues |
| v1.13X | ? | 2 | Unknown | (Xbox) | No PC version no known changes |
Some of the data is collected by @krzys-h, some more was contributed by @Mc-muffin: https://github.com/krzys-h/UndertaleModTool/issues/22#issuecomment-428004703, and various other contributors
Also see the official changelog at https://undertale.com/help/
If you have data on any other versions, please let us know!
TODO: The version number for 1.4.1539 seems wrong - there is no such version, and if it was, it would be a downgrade, but that's what the data file says