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Oct 02 2026

Online Duels Through Steam

A match in progress, with the full interface
A match in progress, with the full interface

Castle Arena now plays online. The host creates a lobby, for friends or public, and invites through the Steam overlay or the Invite friend button. Each player picks a faction and a perk, marks Ready, and the battle begins.

After the battle

  • Rematch takes both players back to the lobby with the same faction and perk, already ready. When both ask, the next match starts on its own.
  • Every match is recorded. Highlights builds a 30 to 60 second reel with the biggest fights, Rescues and falling castles.
  • Clicking a point on the result charts opens the replay at that exact moment.
  • Your Profile keeps your history: wins, streaks, favorite faction and results by faction, arena and opponent.

The story of how two computers stay in perfect sync is in the devlog.

— The Castle Arena team