The Q3VM is a virtual machine used by Quake III to run the game module. The VM is a sort of

sandbox to limit the damage a rogue or malicious QVM program can wreak. Though not perfect,

it certainly is much safer than full access to native machine language, which could otherwise

more easily allow the spread of viruses or the corruption of system resources. In addition, Q3VM

programs, similar to JVM s, are write-once run-on-many-platforms (at least for which a Q3VM

interpreter or compiler exists).