Unlike IBM's PC-DOS, most OEM-branded MS-DOS versions did not include BASIC sample programs (entertaining or otherwise). An early exception was Compaq-DOS - the edition licensed for Compaq's Portable/Plus/DeskPro series of PC compatibles. This one sported its own demo suite, including Time to Play, a collection of games (plus the non-game Biorhythms program). By version 3.31 this was phased out, but the first few releases each offered a different lineup.