The .ulx file extension is used for Glulx data files. Glulx is a portable virtual machine, like the Z-machine. However, Glulx uses 32-bit data and addresses. So it handles game files up to four gigaby...
The .ulx file extension is used for Glulx data files. Glulx is a portable virtual machine, like the Z-machine. However, Glulx uses 32-bit data and addresses. So it handles game files up to four gigabytes, unlike the Z-machine. Also, Glulx natively supports Glk I/O. So game files use Glk capabilities that the Z-machine lacks. But like the Z-machine, games can be written in Inform language and compiled to .ulx files.
Interactive fiction games use .ulx files. These text adventures have gameplay with word commands instead of a character. IF games were first developed in the 1980s and gained huge popularity.
.ulx files need the latest application version to open. Only newer software supports the current format. Check .ulx files for viruses by scanning with antivirus software.
The .ulx file extension has no current software record. But it was an interactive fiction package format. IF Archive used this extensively to create text-based games. It also falls under the Ultrasurf format umbrella.
To open and utilize .ulx files, associate them with the correct application. Right-click and open with another compatible program. Always use that program for .ulx files going forward.
