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One Must Rule playtest
by Violet Interactive
An empire-building auto-battler set in a harsh medieval settlement where every strategic command shapes your kingdom’s fate. Build your empire from the council table, discover game-breaking card synergies, and battle against rival players. Every choice counts, only one will rule!
Anyone with a Steam account can join, and it's free.
- Access
- Instant
- On playtest since
- Oct 16, 2026
- Planned release
- 2027
- Developer
- Violet Interactive
- Platforms
- Windows
- Players
- Multiplayer, Online PvP, PvP, Single-player
- Languages
- English, Japanese, Korean, Simplified Chinese and 2 more
How to join the One Must Rule playtest
- Open the game's Steam page with the Join playtest button. Sign in to Steam if it asks.
- Use the One Must Rule playtest signup there. You're in straight away, with nothing to pay.
- The playtest shows up in your Steam library, ready to install and play.
New to playtests? How Steam playtests work
About One Must Rule
Take control of your chosen ruler and guide their rise from a simple settlement to a massive empire. Rule from the council table, discover game-breaking synergies, and conquer the asynchronous PvP arena. Every choice carries weight, only one will stand!
Every decree you sign at the council table shapes the fate of your army on the open battlefield. Choose and upgrade your cards, combine powerful synergies, and bear the responsibility of your choices as your tactical decisions turn into chaotic victories or crushing defeats.
Select your leader and command unique starting values and Special Abilities. Adapt your strategy to each Ruler’s distinct strengths, leverage their advantages at the council table, and forge a tailored path to victory in every run.
From the game's Steam page.
