Minimal setup for playing q2dm1 is 8 MB compressed. Less if there's only a single player model without skins, but we can allow ourselves to be posh. Made the WinRAR-based installer, cut into floppy-sized volumes, wrote a convenient batch file (with optional dialogs and help screen) to automate copying sets of files to a pack of floppies. Not all computers in school had CD-ROM drives anyway, but they were fast enough, and all had network.