There's a catch-22 with the whole RPG genre on the Turbo.
It's one of the best consoles ever for RPGs, but a huge amount of the library has not been translated.
It's not like the SNES where there are dozens of translations available.
That said, the Legend of Xanadu I and II translations are coming out soon, might wanna check those out.
One of my favorite 16-bit games, period, is Ys IV: Dawn of Ys. If you want adventure, this game has it for sure. Nightwolve and Deuce did a great job bringing it to a bigger audience.
Neutopia is pretty meh in my opinion, though 2 is a little better.
Exile is good, though if you have a genesis just get a cheap copy on there. Exile 2 is so average it hurts.