mspaeth@ln-mspaeth 227 % grep Explor src/mame/drivers/*.c | grep galaxian
src/mame/drivers/galaxian.c: * Explorer I/O
src/mame/drivers/galaxian.c:GAME( 1981, explorer, scramble, explorer, explorer, galaxian_state, explorer, ROT90, "bootleg", "Explorer (bootleg of Scramble)", GAME_SUPPORTS_SAVE )