I read a gamebook that’s not on Goodreads. It is, however, available to download in English for free here, most likely submitted by the author. From what I understand, the only paper edition is in Bulgarian.
It’s beautifully made in Bulgarian, with original illustrations by famous illustrators. Dimo and Ivanchev are credited.
The story is about Middle-Earth-type dwarves who are running away from an invading army. You’ll have to navigate through a brief maze of episodes and find a few keywords, one of which is particularly difficult. There’s no way to read that from the first time. It’s only 100 episodes but the way it’s made, the success sequence is specific and hard to find. I didn’t attempt to fight the battles and only tried to find the codes, which was difficult enough.
Overall, a good book, about 4/5. The artwork, translation, and editing of the Bulgarian edition is 5/5.