Keeps closing inordinately. Maybe a little to old to be stable.
Just everything is tedious to do. Also the map looks barren and flat.
I doubt there's many games in your collection that you still play 18 years on, but Oblivion is undoubtedly one that keeps on giving. Even now, after completing the main quest maybe a dozen times, things keep popping up that i never knew about. sure, the main quest is rather generic, but dig into the guilds and the quests, and the npcs around the town, and you'll find there's things going on under the surface that lures you in.
