Shin Megami Tensei (??????) is a 1992 game for the Super Famicom by Atlus ported to the Sega Mega-CD by SIMS. The Mega CD version was only released in Japan.

Quiz Tonosama no Yabou is a 1991 arcade quiz game by Capcom. SIMS ported it to the Sega Mega-CD in 1992, calling it Capcom no Quiz Tonosama no Yabou (?????????????). No version was released outside Japan.

Elemix! is an Adventure game, developed and published by SIMS, which was released in Japan in 2003.

Stellar Assault SS is the sequel to the Sega 32X game, Stellar Assault (Shadow Squadron in the US). It was released exclusively for the Sega Saturn in 1998, only in Japan. Like its prequel, Stellar Assault SS is a first-person (or third person) perspective shooter set in outer space. While the core gameplay remains much the same, Stellar Assault SS …

Message Navi Vol. 2 (???????? ?????) is a game for the Sega Saturn.