Ammossum

Ammossum

Released Sep 2026

Build an endlessly upgradable weapon! Evolve projectiles into unstoppable firepower in this action roguelike. Fight through hordes of infected beasts, hunt down the source of the plague, and feel the thrill of bloody shootouts filled with bullets, explosions, and acid. Can you survive the madness?

60% positive · 122 reviews
Not yet
Recently released, post-launch plans unclear
Low confidence
Recently Launched
Not yet
Recently released, post-launch plans unclear
Low confidence
Recently Launched

Where to buy

Steam $10.26 $12.99 −21%
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Evaluation

Ammossum launched on September 28, 2026 after four years of development, as described in the launch news post. The developer framed the release as a complete full version, noting it brings "everything we've been building toward," including new weapons, items, railcars, characters, enemies, bosses, and biomes. Since launch, West Glade has been active with post-launch hotfixes on September 30 and October 2, 2026, addressing balance, UI, and bug fixes — a sign the team is engaged and responsive to feedback. However, the game only released six days ago, and the developer has not announced any specific post-launch DLC, expansions, or a content roadmap. There is also no DLC listed on the store. The launch post focuses on thanking the community and monitoring feedback, without committing to future content additions. Because the game is so newly released, there is simply not enough information yet to determine whether West Glade plans to add more content beyond maintenance patches.
Evidence
Ammossum launched on September 28, 2026 after four years of development. Developer describes it as the full version and says they will monitor feedback and work on issues.
news post · Sep 28, 2026 source content shipped
high
Release date announcement states the full release 'will bring everything we've been building toward' — no post-launch content roadmap mentioned.
news post · Sep 3, 2026 source ambiguous
medium

Media

Details

Developer
Publisher
Yahaha Games
Achievements
91
Platform
Windows
Controller
full support
Steam Deck
Playable
Players
Single-player

About this game

The world is falling apart, and your family has been taken from you. The infected swarm the railroads, the plague spreads, and the only way forward is through fire and chaos. Keep the train moving, search for answers, and face the truth waiting at the end of the line.

Why settle for ordinary guns when you can craft pure chaos? Combine and evolve your projectiles—nest them within each other, fuse them into devastating combos, and fill the battlefield with nonstop explosions. The possibilities are endless, and so is the firepower!

Your train isn’t just a ride—it’s part of your build. Each railcar adds unique bonuses, from economy to battlefield control. Pick the right upgrades, mix the synergies, and fine-tune your setup to turn every fight in your favor.

Every run brings discoveries. Unlock weapons, find hidden mechanics, and expand your arsenal with each attempt. The more you play, the stronger—and wilder—your options become. Experiment, and push your limits with each new attempt—because no two runs are the same!

Last evaluated Oct 4, 2026
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