Overlord

As the last remaining player in a dying MMORPG called Yggdrasil, Momonga sits alone in his guild's massive hall — his guildmates all quit ages ago — waiting for the servers to shut down, which is honestly kind of sad. But when midnight hits and the game should be gone, he's still there. Trapped inside his max-level skeleton wizard body, in a world that used to be a game but now feels very real. The NPCs he and his friends created? They're alive now, with full personalities, and they worship him like a god. The thing that makes this 13-episode TV series from Madhouse stand out is that Momonga — who renames himself Ainz Ooal Gown after his old guild — isn't a hero. He's an undead overlord surrounded by fanatically loyal servants, and the show leans into that. He's figuring out the rules of this new world while trying not to let anyone realize he's basically a confused salaryman playing pretend as an all-powerful dark lord. The tone is action-packed but there's a dry humor running underneath everything. If you liked Sword Art Online's trapped-in-a-game setup but wanted something darker and more morally gray, or if Log Horizon's strategic worldbuilding appealed to you, Overlord scratches a similar itch from the villain's side of the table. The world-building here is genuinely dense, with political structures and factions that keep things interesting beyond just combat.