Roguelite Train Defense Game Ammossum Sets September Release
The September release date lands after four 2025 playtests that the developer says drew over 5,000 total participants, with the full version adding new weapons, vehicles, and bosses beyond the current demo.
Reporting from 1 source: Automaton.
Yahaha Games announced on September 4 that West Glade's roguelike action game Ammossum will launch September 28 local time, or September 29 in Japan due to the time difference. The PC Steam release combines deck-building and tower defense elements. A demo is currently available on itch.io, with in-game Japanese text support planned.
The game casts the player as an opossum chasing stolen family members while running a train through a Western-style world where monsters have taken over the railways. Enemies reaching the tracks reduce the train's durability, and destruction of the locomotive means defeat.
Weapon builds hinge on combining four projectile types: Bullet, Arrow, Frag, and Ball. Embedding projectiles into others builds attack chains that can flood the screen with bullets and explosions. The train itself is part of the build, since vehicles carry effects that support combat or acquire items after battle, and some locomotives have their own attack methods.
Items found during a run can be melted in the train's furnace to strengthen another item when it fills. West Glade has run multiple playtests, with over 5,000 people participating across the four held in 2025, and has since added weapons, vehicles, characters, and quests based on feedback.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.