Stop. With. The. Engine. Talk. It's Unity3D. It's constantly being upgraded and one of the most (if not the most) advanced in the field of cross-platform 3D and 2D development. The appearance of the game and lack of polish is strictly the developers fault. He did do expansions for The Quest, which had already all assets and everything polished by the developer who made it. Catacomber mostly did the level design as far as I know. Unfortunately he used the same approach with this game, using Ork framework as the base. Ork however, mostly focuses on scripts and not all aspects of a quality RPG. And that's the reason why this game is as it is and why Catacomber is so oblivious to all other aspects of the game.