Overlord Watch Order

Why this order?

Overlord is one of the simplest big isekai series to watch in order, because Madhouse released it in a clean, linear march. The story follows Momonga, a player left logged into a dying MMO who wakes as the skeletal overlord Ainz Ooal Gown, ruling a guild of fanatically loyal NPCs who have become real. Each season expands his conquest of the New World, so the intended path is just chronological release order.

The watch order here is the canonical one: Season 1 (2015), Overlord II and Overlord III (both 2018), Overlord IV (2022), and finally the theatrical film Overlord: The Sacred Kingdom (2024). The film is not a recap or a side story. It directly continues the events that Season 4 set up, adapting the Sacred Kingdom arc of the light novels, so you should save it for last rather than slotting it in earlier.

The one gotcha worth knowing is the pair of compilation movies, Overlord: The Undead King and The Dark Warrior, which re-edit Season 1 into two theatrical recaps. They are entirely optional. If you have already watched Season 1 as a TV series, you can skip both without missing anything new. They mainly exist as a refresher or a faster on-ramp for newcomers who prefer films.

If you enjoy Overlord's power-fantasy spin on isekai, the obvious neighbors are That Time I Got Reincarnated as a Slime, also a tale of an overpowered non-human protagonist building a nation, and Re:Zero, a darker Madhouse-adjacent isekai. The Saga of Tanya the Evil shares the morally gray, strategy-heavy tone. None of them affect Overlord's order, but they scratch the same itch once you reach the end of the New World saga.