The transition to the PSP marked a significant moment for the genre. Though the PSP was a mainstream handheld console, the release of titles like Hypnotism 2 on the UMD format targeted a niche adult demographic in Japan. This move demonstrated the platform's versatility and its willingness to host "classic" PC titles for a mobile audience, even those with controversial subject matter. Japanese Adult Titles To PSP
The sequel adds:
(like suvorexant) may be more effective than standard hypnotics like zolpidem. Hypnotism 2 Psp