Tempted to tear into that game but it IS tecnically a First Person Roleplaying Immersive Sim (albiet a weak one) so I'll drop it. It's still fun for a while, has a fair bit of depth, atmosphere is good, acrobatics skill is fun and shouldn't have been removed in Skyrim. It's a bit better than Skyrim.
Try Elder Scrolls III: Morrowind. You'll probably be annoyed by the combat

t becomes the same as Oblivion after a while...a long while. Accuracy is based on skill) and the graphics may hurt your eyes a little (without mods. Hmm, you can get mods for combat too), oh, and no objective markers may hit you are if you are not used to older games (you are expected to navigate and complete objectives by more immersive and intellectually demanding means: descriptions, directions, compass, map, read books, magic and so on), other than that it's quite a fun, flawed game. It's the best Elder Scrolls imo, but they all suffer from similar flaws. Mostly copy n paste. Lots n lots of copy n paste. That said I haven't played Daggerfall so it's exempt, but I hear it has randomly generated dungeons or something so sounds like I'll be annoyed.