Note: Unless you are using a severely outdated operating system or CPU, you most likely want to always download the x64 (64-bit) version of Ultimate Doom Builder.
The 64-bit version has less limitations on the total size of the project that you can load and edit, while the x86 (32-bit) version of Ultimate Doom Builder only exists for compatibility with older PCs.
If not sure, follow these instructions to find out whether your system is 64-bit: Which version of Windows operating system am I running?
The 64-bit version has less limitations on the total size of the project that you can load and edit, while the x86 (32-bit) version of Ultimate Doom Builder only exists for compatibility with older PCs.
If not sure, follow these instructions to find out whether your system is 64-bit: Which version of Windows operating system am I running?
All recent versions
Ultimate Doom Builder R4188
13 Jul 2024
ZScript parser: added support for the missing "internal" modifier. Fixes #1080
Ultimate Doom Builder R4185
13 Jul 2024
Fixed an issue where unknown linedef and thing flags were lost when loading the map with the wrong game configuration, or switching between game configurations in the binary map formats. Fixes #1072
Ultimate Doom Builder R4184
09 Jul 2024
Updated README file with additional advice building on Linux
Ultimate Doom Builder R4183
09 Jul 2024
Fixed a crash when adding opening the dialog to add a directory resource on Mono Winforms
Ultimate Doom Builder R4182
05 Jul 2024
UDBScript: fixed a crash when trying to access the UDMF fields of a thing that has its scale set. Fixes #1079