Topple Keep is a physics castle brawl for your phone.

Race your opponent to crown a castle. Every block is a choice: build it into your walls, or load it into the slingshot and send it at theirs. They're doing exactly the same to you.

• Build it for real. There's no grid, just real physics. Every block has weight and balance, and the ghost turns amber if a block will tip and red if it won't fit.
• Mortar holds it together. Settled blocks bond to whatever they touch. Lay bricks across the joints, brace your towers, and hang bridges that stay up even when the blocks underneath get knocked away.
• Fling anything. Drag any block onto your slingshot, pull back and let go. Wood, stone and bombs each hit differently. Crack a joint, then hit it again to bring it down.
• Wear the crown. Reach the gold line and a crown arrives. Set it on a flat top and your meter fills while it stays up. A full meter wins. Knock theirs off before it fills.
• Mine your rubble. Loose blocks and incoming shots that land on your plot turn to rubble. Tap it to mine it back into your rack. Rubble that settles square takes mortar again.
• Three AI difficulties: Easy, Normal and Hard. The AI mines its own rubble too.
• Mobile optimised: portrait, one-thumb drag-and-fling, 2½-minute matches. It also plays in desktop browsers with a mouse.

Made for the Slapjam AI jam (theme: Castles).

Credits

• Game design, direction and playtesting: guynao (Guy Naor)
• Code and pixel art: Claude Code
• Sound effects: made with chirrp, a procedural SFX library (MIT/Apache-2.0)
• Crowd reactions and war horn: Suno
• Music: synthesised in the browser
• Font: Press Start 2P by CodeMan38 (SIL Open Font License)
• Engine: Phaser 3 + Matter.js (MIT)