Crimson Moon
A ProbablyMonsters action RPG where you play a Nephilim — half human, half angel — sent into the ruined city of Gildenarch to cut down demons, vampires, and Hellgrowth horrors. Out September 1, 2026 on Steam, Epic, PlayStation 5, and Xbox Series X|S for $19.99, solo or in 2-player online co-op. Three days in, the game had already pulled 2,170 Steam reviews — a real launch-window reception number, not a wishlist count.
Launch in numbers
Day-one numbers on Steam that are worth noting before you decide whether to buy:
ProbablyMonsters is not a name most PC players recognise. They've spent years doing co-development on bigger projects — they were part of the team on Koei Tecmo and EA's Wild Hearts, and they shipped the original Eternal Steel under their own banner. Crimson Moon is one of their first self-published original titles at this size, and 2,170 reviews in three days is the kind of traction that suggests it landed with the dark-fantasy co-op audience.
What the combat actually feels like
The store description leans hard on the Nephilim fantasy: supernatural powers, brutal close-range combat, demons, vampires, undead, "Hellgrowth abominations." That last word is doing real work — Hellgrowth is the setting's signature enemy class, and the marketing screenshots lean on it for visual identity. You fight alone or with one other player, and the combat reads as a third-person action game with heavier fantasy flavour than a typical soulslike.
Three details that matter for whether the game is for you:
- It's not a soulslike. The marketing doesn't position it as one. The Steam page is missing the soulslike tag, the combat description emphasises Nephilim powers over dodge-roll stamina play, and reviews at launch describe it as faster than a FromSoft game.
- Co-op is exactly 2. Online only, no split-screen. If you wanted to bring three or four friends, this isn't that game.
- Controller is fully supported. The store page lists "Full controller support" and the categories include DualShock and DualSense flags. Aimed at couch play even though it's a PC-only release.
Two-player co-op, and why that shape
ProbablyMonsters' choice to cap co-op at two players is unusual in 2026. Most action RPGs in the same genre space — Remnant, Outriders, Anthem, Wild Hearts itself — push to three or four. Crimson Moon stops at two, and that's a design choice, not a launch-day tech limitation: the store page lists Online Co-op as a feature without mentioning async play, and the 2-player co-op seems to be the intended scale for the campaign.
What that means in practice: the encounters are tuned around a pair, not a squad. If you've been waiting for a fantasy action RPG to play through with one specific friend on the couch or over Discord, this is built for that exact arrangement. If you have a regular four-stack, you'll have to leave one person out.
Platforms, and what's missing
Crimson Moon is multiplatform. The ProbablyMonsters site lists four storefronts on launch day: Steam, the Epic Games Store, PlayStation 5, and Xbox Series X|S. If you only have access to one of those, you can play it. The Steam listing is the only storefront that publishes a hard price — $19.99, no launch discount as of September 4, 2026 — and probably the only one with a public review count, which is where the 2,170 number comes from.
What is missing is desktop variety. The Steam page lists Windows 11 at both the minimum and recommended tiers — not "Windows 10 or later," specifically Windows 11. That cuts off a meaningful chunk of PC players whose rigs are still on Windows 10. There is no Mac, no Linux, and no Steam Deck Verified badge at launch. The Switch and any cloud-streaming versions are not announced.
Standard edition on Steam as of September 4, 2026. No launch discount listed. The Deluxe Edition Upgrade is a separate $9.99 DLC, and the soundtrack sells for $9.99 on its own.
Worth a look if
- You want a 2-player co-op dark-fantasy action RPG that doesn't make you organise a four-person squad
- You're on Windows 11 with at least a GTX 1070 / RX 5700 / Arc A580
- The Nephilim-vs-Hellgrowth pitch is doing it for you visually — the screenshots sell the aesthetic more than the description does
- You're fine with $19.99 as the floor — there's no launch discount and no announced price drop
Hold off if you're still on Windows 10, you wanted a three- or four-player co-op session, or you specifically wanted a soulslike — the genre tag is action RPG, not soulslike, and the marketing is built around the Nephilim fantasy rather than a FromSoft-style challenge pitch.
Quick facts
- Released: September 1, 2026 on Steam
- Developer / Publisher: ProbablyMonsters (self-published)
- Price: $19.99 USD, standard edition, no launch discount
- Platforms: PC (Steam, Epic Games Store), PlayStation 5, Xbox Series X|S — Windows 11 only on the Steam listing, no Mac, Linux, or Switch
- Players: Single-player and 2-player online co-op
- Achievements: 30
- Controller support: Full (DualShock, DualSense, generic gamepad)
- Languages: 8 — English (full audio), French, Italian, German, Spanish (Latin America), Japanese, Brazilian Portuguese, Simplified Chinese
- Storage: 50 GB
Watch it
Official launch trailer on YouTube: Crimson Moon — Official Launch Trailer. The trailer was uploaded to the ProbablyMonsters YouTube channel ahead of the September 1 release. The earlier Summer Game Fest gameplay trailer is also worth a look if you want a clearer sense of the combat: Crimson Moon — Official Builds Gameplay Overview Trailer.