Phantasy Star II Text Adventure - Eusis no Bouken © 1991 Sega Enterprises, Limited.
Released in 1991 in Japan for the Sega Meganet online service.
The game's subtitle translates from Japanese as "Yushi's Adventure".
CONSOLES:
Sega Mega-CD (mar.18, 1994) "Game no Kanzume Vol. 1 [Model G-6032]"
Sony PS2 (mar.27, 2008) "Phantasy Star Complete Collection [Sega Ages 2500 Vol.32] [Model SLPM-62775]"
Game's ROM.