https://scimitardd.itch.io/sm4r-demo
SM4R is a singleplayer game with various NPC dialog (pretty funny most times) and a varieties of quest. The game features many NPCs, items and a level progression system. The quests can get quite interesting (and bizarre) sometimes, and the NPCs themselves are a gem. The game feels like a MMORPG game (with other players replaced by NPCs), and it works out pretty effectively. I've followed the game during its development stage, and the developer did a wonderful job on it.