Only Fortress
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About Only Fortress
Only Fortress is a fortress-building game with PvP and PvM challenges. You customize your fortress, lead troops on explorations and fight using your hero’s abilities and spells.
Build your fortress
You can customize every part of your fortress, from its grounds to its walls, and construct buildings instantly without waiting. Design its details to suit your style and strategic plans.
Lead your heroes
Take control of a hero and choose a team of special hero-troops to fight alongside you. Use your character’s abilities and powerful spells in battles against players and other opponents. The game also supports cross-platform battles with players around the world.
Frequently asked questions
Yes. Only Fortress is free to play on Steam, so there is nothing to buy to start playing.
The minimum requirements for Only Fortress are: Windows 10, 512 MB RAM, 200 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.
Yes. Only Fortress is multiplayer only. It supports online co-op and online PvP. Players on different platforms can play together.
Mostly, yes. Valve rates Only Fortress as Playable on the Steam Deck: it runs, but may need some manual setup.
Yes. Only Fortress is the full base game. You need nothing else to play it.











