Marrow March

Castle defense games for browser, PC and mobile

Updated

In a castle defense game the thing you protect is a place: walls, a gate, a keep. The best of them make the castle part of the strategy, something you build, repair and fall back into when the field is lost.

We make Marrow March, so it is on this list; it is marked as ours and it comes last. The rest are games we would point a friend to.

  1. Thronefall

    GrizzlyGames, Mythwright · Windows, Mac (Steam) · Paid

    A minimalist kingdom defense: build by day and hold it by night, with walls to fortify and an army from barracks and archery ranges, leading from the front as the king. If the castle centre falls, the run is over.

  2. Diplomacy is Not an Option

    Door 407 · Windows (Steam) · Paid

    A medieval town that becomes a siege: more than 25,000 enemies storm your castle on procedurally generated maps, and the walls you build and rebuild and the armies you raise are what keep them out.

  3. Kingdoms and Castles

    Lion Shield · Windows, Mac, Linux (Steam) · Paid

    Grow a hamlet into a city and a castle you stack from blocks: its towers and walls take their shape from how you place them, and the kingdoms next door bring trade, alliances and war.

  4. Bad North: Jotunn Edition

    Plausible Concept, Oskar Stålberg · Windows, Mac (Steam) · Paid

    Defend your island kingdom against Viking invaders as your people flee from island to island, moving a few squads around the shape of each one: a short, brutal real-time tactics roguelite.

  5. Orcs Must Die! 3

    Robot Entertainment · Windows (Steam) · Paid

    Fight beside your traps on the battlefields around the castles, against waves of orcs hundreds strong that are trying to breach the walls.

  6. Grow Castle

    Raon Games · iOS, Android · Free, with ads and in-app purchases

    Your castle is a tower of floors, each holding a hero chosen from more than 120, beside the town's archers. Upgrade it, hold the waves, and climb the rankings with a guild.

  7. Kingdom Rush

    Ironhide Game Studio · Browser (CrazyGames) · Free

    The original Kingdom Rush, free in the browser on CrazyGames: a kingdom defended one handmade level at a time.

  8. Marrow MarchOur game

    Enes (us) · Desktop browser · Free

    Our castle defense is about one wall: you place and train soldiers in front of it, put guns on it and traps before it, and once your line has lit the Inner Ward a breach moves the fight onto the road inside, where the gate's portcullis, boiling oil and drawbridge hold the line. Free in a desktop browser.

How we chose

We picked games where a castle, its walls or its keep are what you defend, across the browser, PC and mobile. Facts were checked against each game's store on 1 October 2026, and the browser pick's page was live on CrazyGames that day.

Questions

What is a castle defense game?

A strategy game in which you protect a castle, its walls or its keep from waves of attackers, with towers, traps, soldiers or the walls themselves.

Are there castle defense games I can play online for free?

Yes: the original Kingdom Rush is free in the browser on CrazyGames, Marrow March runs free in a desktop browser, and Grow Castle is free on mobile.

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