I am looking for a great free RPG, that's preferably turn-based, but any RPG to scratch my itch would be great.
Cardinal Quest 2 is one of the best roguelikes, and the pay model is really balanced for its freemium front. Adventure to Fate Battle Arena just came out yesterday, and it's a pretty deep turn-based RPG. AND, it's pretty balanced as a freemium. Tiny Dice Dungeon's surprisingly balanced too. Other than these i dont know any freemium RPG without the usual freemium traps getting in the way. Im really curious as to why you are looking for freemium titles when there is a good amount of premium turn-based RPGs available.
