Re: Old Choose-Your-Own-Adventures/Gamebooks
There's a couple to choose from.
Lone Wolf, a fantasy series where you play as the last of an order of warrior-monks, going around the world doing heroic things.
Fabled Lands, a partially unfinished fantasy series, famous for it's open-ended and free-roaming gameplay.
Heart of Ice, a one-off gamebook set in a post-apocalyptic earth, where you are after a elusive gem of enormous power.