Grab invaders. Fling them skyward. Smash them into each other. Defend a growing castle across 150 sieges with weighty physics, strange enemies, brutal chain reactions and devastating magic. Keep the walls. Break the world.

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About This Game

Your walls are under attack. Your best weapon is the army attacking them.

FLINGKEEP is a darkly comic physics castle-defense game. Grab an invader, then fling a lightweight runner across the sky, swing a heavy brute through a crowd, or smash a held foe into the ground. Every collision can spark a chain reaction—and sometimes the smart move is to wait.

Know your enemy

Face 38 regular enemy types and ten bosses, each with distinct weight, strengths and counters. Silence bellringers before alarms spread, disarm fuse jesters, break mirror witches’ protection, freeze anchored knights and use charged machines to start a chain reaction.

Build your keep

Strengthen 36 upgrade lines with five ranks each, reinforce walls and gates, recruit archers and build siege weapons. Your castle grows through six visual tiers. Choose campaign decrees with benefits and costs.

Fight across ten lands

Survive 150 sieges and make 30 campaign decisions, from the burned Cinder March to the frozen White Maw and the Last Horizon. Unleash frost, falling stars and lightning.

Let chaos take its course

Weighty collisions, airborne bodies, lingering injuries and rare slow-motion moments keep battles unpredictable. Choose Medium or Hard, or experiment in a separate Chaos Arena. Full and reduced gore, motion and audio options are available.

  • Grab, fling, hold and smash with mouse or touch.
  • Distinct enemy weights, abilities and counters.
  • 150 sieges, ten regions, 38 enemy types and ten bosses.
  • 36 upgrade lines, five ranks each, and six castle tiers.
  • 30 campaign decisions, powerful spells and a separate Chaos Arena.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Includes prerecorded AI-generated enemy voices, AI-generated promotional artwork in the Steam assets and trailer, and AI-assisted store-page translations awaiting native review. No AI content is generated during gameplay.

Mature Content Description

The developers describe the content like this:

Frequent stylized fantasy combat depicts blood, dismemberment, decapitation, injuries and death reactions, with screams. A reduced-gore option is available.

System Requirements

    Minimum:
    • OS: Windows 10 (64-bit)
    • Processor: 2.0 GHz dual-core processor or equivalent
    • Memory: 4 GB RAM
    • Graphics: Integrated graphics capable of hardware-accelerated 2D rendering
    • Storage: 500 MB available space
    • Sound Card: Standard Windows-compatible audio device
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