Fatal Labyrinth is a roguelike RPG for the Mega Drive by Sega released in 1991. It’s a very early example of the genre for consoles. There are thirty randomly generated floors of a dungeon to explore, then you need to kill a dragon and collect a goblet. I found it quite easy, which is surprising since these games are normally extremely hard. When you die you don’t start completely from scratch but can restart from a checkpoint in an earlier floor.
It turns out that the designer (Hirokazu Yasuhara) also created the original Sonic the Hedgehog games, as well as Altered Beast.