PARTICIPANT GAME
Crown and Flag
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Open the game, try playing, and press the heart.
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Press "Start" inside the game, if such a button exists.
About the game
A turn-based strategy in the spirit of classics on old phones: lead your king, capture castles and villages for gold, hire an army, and break the defenses of three enemy houses. Every turn is a small puzzle about positioning and terrain, so after a loss, you'll want to play again to do better.
AI and tools: Claude (Claude Code) + pure HTML/Canvas/JS, no libraries
Controls
Mouse or touch: click a unit — where to go — on an enemy to attack. Warrior and King on a building → "Capture", click your castle → recruit. D — show danger, E — end turn, Tab — next unit, Esc — cancel. Campaign with 7 missions.
Contest and voting rules →How I made the game
The idea grew from nostalgia for Ancient Empires on button phones: I wanted the same turn-based tactics, but in a browser and without pixelated vintage. Claude Code wrote all the code, graphics, and sound based on my descriptions: units and maps are drawn directly with code on canvas, music is synthesized via WebAudio, so the game fits into a single HTML file. The most interesting part was training the bots: we ran hundreds of bot-vs-bot simulations so that each difficulty level was truly smarter than the previous one, while keeping all missions beatable. A separate story — finding a map where bridges led into the water and fixing it with an autotest.
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