A single-player game just did something that sounds impossible: it added MMO raids you can run entirely alone. Erenshor, the “simulated MMO” that recreates the feel of a bustling online world without a single real player, has launched its Planar March update — its biggest content drop yet — bringing classic EverQuest-style raiding to a game with a server population of exactly one human. For gamers burned out on scheduling and drama, and for anyone watching indie developers find sharp niches, it’s a genuinely clever bet.
What a “Simulated MMO” Actually Means
Erenshor is the work of a solo developer, built as a love letter to old-school MMORPGs. Instead of connecting you to thousands of strangers, it fills its world with AI-controlled characters the game calls “simplayers.”
These bots don’t just stand around. They group up, join guilds, chase their own loot, and behave like the anonymous randoms you’d meet in a 2001-era online world. The result is the social texture of an MMO — the crowded zones, the party invites, the loot competition — with none of the reliance on other people’s schedules or moods.
Inside the Planar March: Raiding Without the Drama
The Planar March update is Erenshor’s largest to date, and it’s built around endgame raids. It adds four sprawling raid zones, more than 20 unique boss encounters, and over 120 new pieces of gear to chase.
There’s mechanical depth to match. The update layers in new progression systems, more than a dozen fresh spells and skills, and a dedicated raid interface that lets you plan how your simulated party tackles each boss’s mechanics. Developer estimates put it at roughly 20 to 40 hours of content for the average player.
Crucially, you command a group of AI teammates through these fights — 14 computer-controlled players filling out the raid. You get the coordination and the loot grind, minus the DKP arguments and the guild politics.
The Indie Bet on Nostalgia and Solitude
Erenshor is a smart read on an underserved audience. Plenty of players love the rhythms of classic MMORPGs but have aged out of the time commitment — the four-hour raid nights, the flaky pick-up groups, the toxic chat. Erenshor sells them the nostalgia without the friction.
That focus is paying off. The game holds an impressive 94% positive rating on Steam, the kind of number that signals a niche served exceptionally well rather than a mass-market swing. For indie developers and entrepreneurs, it’s a textbook example of winning by solving one specific frustration better than anyone else.
The Bottom Line
The Planar March turns Erenshor from a charming curiosity into a full-featured solo MMO with a real endgame. Raiding alongside simulated teammates won’t replace the highs of a coordinated human guild, but it removes almost everything players complain about. If you’ve ever wanted the loot chase of EverQuest without the calendar management, Erenshor’s raids just made a compelling case.