Phantasy Star TG
This fan game is a demonstration of an RPG engine programmed for the TurboGrafx-16 (aka PC Engine) by DamageX. It has been in development since 1999. After many long years of development, it is now a complete game.
You'll need a TurboGrafx-16 emulator to play it.
Download Phantasy Star TG (ATTENTION: when you unzip the zip file, the ROM file is named "WHAT.PCE").