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Castle Away

Castle Away is in development for a fourth-quarter 2026 release, with a demo available on Steam and a playable build shown at Tokyo Game Show 2026. The game is an auto-battler roguelite where players build a castle on a 3x3 grid and manage route choices against five demon bosses and the Demon King.

Synthesized from 2 Yomimono stories · updated Sep 22

Castle Away is a hand-drawn roguelite strategy game from three indie developers: Rene Slump, Sim Kaart, and Matthijs Koster. Players ride a giant castle, fight monsters, gather loot, and build structures on a 3x3 grid. The goal is to defeat five demon bosses and the Demon King. A demo is available on Steam, and the full game is planned for the fourth quarter of 2026 with Japanese text support.

At Tokyo Game Show 2026, a playable build showed how the auto-battler works. Players grow a floating castle on the 3x3 grid, placing buildings that fire automatically during battle. Bosses arrive on their own after a set number of actions rather than sitting at fixed points. Cleared paths can be rewalked freely, giving the map unusual freedom of movement. Exploration and item pickups count as actions that pull the boss closer, so each optional detour costs something.

Coverage has focused on the demo and the Tokyo Game Show build rather than on a final release date. The fourth-quarter 2026 window and Japanese text support remain the only release details stated. The design choice that ties exploration to boss timing is the throughline across both stories, from the Steam demo description to the Tokyo Game Show playthrough.

Key facts

Developers
Rene Slump, Sim Kaart, and Matthijs Koster ↗
Demo availability
A demo is on Steam ↗
Planned release window
Fourth quarter of 2026 ↗
Japanese text support
Japanese text support is planned ↗
Castle grid
Players build on a 3x3 grid ↗
Boss count
Five demon bosses and the Demon King ↗
Tokyo Game Show 2026
The game was playable at Tokyo Game Show 2026 ↗
Boss arrival
Bosses arrive after a set number of actions rather than at fixed points ↗
Action cost
Exploration and item pickups count as actions that pull the boss closer ↗

Timeline

Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.

Facts

Release
game · Tokyo Game Show 2026 · Japan · 2026-09-19
Release
game · Q4 2026 · 2026-08-28
Announced
demo on Steam · 2026-08-28

Structured graph also available as JSON at /public/entities/castle-away. CC BY 4.0.

All coverage

Sep 19

Castle Away Brings Free Exploration To The Auto-Battler At Tokyo Game Show 2026

The auto-battler roguelite Castle Away was playable at Tokyo Game Show 2026. Players grow a floating castle built on a 3x3 grid, placing buildings that fire automatically during battle. Bosses arrive on their own after a set number of actions rather than sitting at fixed points, and cleared paths can be rewalked freely, giving the map unusual freedom of movement.

Aug 28

Roguelite Strategy Castle Away Demo Now on Steam

The hand-drawn roguelite strategy game Castle Away has a demo on Steam. Three indie developers, René Slump, Sim Kaart, and Matthijs Koster, are behind it. Players ride a giant castle, fight monsters, gather loot, and build structures on a 3x3 grid to defeat five demon bosses and the Demon King. The full game is planned for the fourth quarter of 2026, with Japanese text support.