Castle Stacker: A Real-Time Siege Strategy Where Your Fortress Falls From the Sky

11/4/2026, 6:12:14 PM (JST)

Release date: 11/3/2026

Tags: #strategy #auto-battler #action-rts #real-time-tactics #roguelike-deckbuilder #wargame #2d #pixel-graphics

Reference prices

Japan

¥ 491 (JPY)

Steam JP

$3.74 (USD)

Steam Global

Check the requirements against my PC (item by item: confirmed / short / unknown. Nothing leaves your device)

Live Store Snapshot

Body text may reflect the state at publication time. For the latest sale, price, and review changes, prioritize the live price panel, review panel, and the Steam store listing.

Japan Price: ¥ 491
Global Price: $3.74
Price in Your Region: ¥491-25%Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 14 Nov 2026
Sale Status: On sale
Price Checked At: 11/14/2026, 10:10:59 PM (JST)

Key highlight

Castle Stacker is a real-time siege strategy where you build your fortress by dropping rooms from the sky, then command autonomous little people to defend it and defeat the enemy king.

Who this is for

A fresh take on real-time strategy with card-based castle building and autonomous units, plus online PvP for competitive play.

Details

Overview

Castle Stacker, developed by D Squires and published by Moronical Games, is a real-time siege strategy game that flips the usual tower-defense formula on its head. Instead of building upward from a foundation, your fortress literally falls from the sky, one room at a time.

You pick a card, line it up, and drop it—a cannon here, a barracks there, a treasury tucked safely behind a rampart. The game launched on Steam on November 3, 2026, and supports both single-player and online PvP multiplayer, making it a fresh addition to the strategy genre.

Highlights

Card-Based Castle Construction: Each room is a card you place, and filling a complete row triggers a gold bonus. Leave a gap, and you'll be patching it under enemy fire.
Autonomous Little People: You don't fire the guns yourself. Bombardiers man cannons, artificers climb ladders to repair walls, guards hold stairways, and soldiers gear up at the armoury before charging across no-man's-land.
Objective-Driven Siege: The ultimate goal is to reach and defeat the enemy king, who sits in his throne room and fights with surprising tenacity.

Who It's For

If you enjoy real-time tactics with a roguelike deckbuilding twist, or if you're a fan of pixel-art strategy games that emphasize positioning and resource management, Castle Stacker will likely appeal to you. The blend of card-based placement and autonomous unit behavior creates a unique challenge that rewards careful planning and quick adaptation.

The online PvP mode adds a competitive layer for those who want to test their castle-building skills against other players.

Game Info

Genre: Strategy (with elements of auto battler, action RTS, and roguelike deckbuilder)
Developer: D Squires
Publisher: Moronical Games
Release Date: November 3, 2026
Modes: Single-player, Multi-player, PvP, Online PvP
Platform: PC via Steam
Language: English

For the latest pricing and availability, check the Steam listing. User reviews are not yet available, but the game's unique premise and engaging mechanics make it worth watching.