Glulxe is an interpreted implementation of the
Glulx portable Interactive Fiction VM, like the
Z-machine but using the Glk API. Unlike the
Z-machine, it uses 32-bit data and addresses, so
it can handle game files up to four gigabytes
long. Also unlike the Z-machine, it has native
support for Glk I/O, so game files can use any
capability Glk provides. However, like the
Z-machine, you can write games in the Inform
language and compile them to Glulx game files.