If you put the disc for the Dreamcast version into a CD player, a warning featuring the voice of Neji Taihei and a female voice will play.
Female voice: This is a game disc for the Dreamcast. There is game data on the first track, so please do not play it [on this CD player]. Neji: This is a game disc for the Dreamcast. Female voice: It is a game called Roommania #203. Neji: Ah, that's right. Neji: Um, on the first track- Female voice: There is game data. Neji: Ah, yeah, right. That shouldn't be played [as a CD] then. Female voice: Mm-hm. Neji: We need to make sure everyone is careful. Female voice: Yes, thorough dissemination is important. Neji: Thorough dissemination...? Female voice: You don't know what that means? Neji: Er- sorry.