Mimar Sinan

Highlights

• A real masonry simulation, written from scratch. Every arch, dome and half-dome pushes outward; the game sums the thrust vectors on every pier and wall, adds the self-weight, the weight towers and the attached buttresses, and checks the classic middle-third rule: when the resultant leaves the middle third of the pier's base, the stone cracks and the piece falls. Piers can also be crushed. There is no physics library; the same pure functions run for the player, the hint, the bot and the Node test (node test-levels.js).
• Sinan's lessons are the real solutions. Half-domes take the main dome's thrust and carry it to low walls, weight towers pull the resultant back inside a slender pier, buttresses hide behind walls and inside side galleries, stepped buttresses carry the heavy thrust of a five-unit dome, and an octagon of eight piers halves the thrust on each one. A weight tower can even work against you in an earthquake.
• 15 commissions in 3 periods. Apprentice (village mescit, portico, first buttresses, windows that must stay open, the Bayezid lesson), journeyman (a four-unit dome, minarets, the first earthquake, side galleries, eight piers) and master (Rüstem Paşa, Şehzade, Mihrimah Sultan, Süleymaniye, Selimiye). Each one has a footprint, a stone budget, a target dome size and sometimes open windows, minarets or an earthquake test.
• Every level is provably solvable. Each commission carries a reference solution that the same simulation must pass when the game loads; the hint (H) shows its next piece as a ghost. Stress is shown live as a green → yellow → red overlay while you build; hold V to see the thrust arrows, the thrust line inside each pier and its middle third.
• Collapse you can watch. Failing pieces crack, tip over in the direction of the thrust, scatter debris and dust, and anything they carried comes down with them. Late commissions shake the ground for a few seconds.
• A growing skyline. Every finished mosque is rebuilt as a small model on the hill around the site; the ending circles the whole skyline at sunset.
• Played by a bot. ?auto builds every reference solution through the same placement API as a player and tests it. Measured: 15/15 commissions, 45/45 stars, 0 JS errors, 60 fps on an Intel UHD 620 at 1280×720, 34-56 draw calls during play (24-26 on the title and ending screens).
• One file, made in code. One index.html with Three.js r170 from a CDN; every mesh, texture, icon and sound (chisel taps, crane creak, stone thuds, cracks, the earthquake rumble, a ney-and-kudüm loop) is generated in code.

How to play

[!TIP] Goal: roof the hall (the blue cells) with a dome of the asked size, keep the windows open, raise the minarets, stay within the stone budget, then remove the scaffolding. Three stars per commission: the asked dome size, stone left over, and a safety margin (stress ≤ 80 %, or ≤ 90 % in an earthquake).

Pick a piece from the tray at the bottom and click a cell. Piers (tall), walls (low) and buttresses stand on the ground; arches span two piers; domes sit on four corner supports of equal height (any extra pier under the rim shares the load); a half-dome leans on two piers of the main dome and comes down on two outer supports; a weight tower goes on top of a pier; a minaret only needs its own cell. The stone counter in the top bar is what you have left. The colour of each piece is its stress; the number in the top bar is the worst one. Press Space to remove the scaffolding.

• A pier is a rectangular block of width 1 and height 2 (walls 1, buttresses 1.5); every load is applied at its top.
• An arch of weight W pushes each end outward with 0.3 W. A dome of size s weighs 4 s², and pushes outward with a share (0.08 s + 0.10) of its weight, split evenly between the supports under its rim and aimed radially from its centre. A half-dome weighs half a dome; its outer supports take 0.8 of a full dome's corner share, and the axial component of that push comes back on the flat edge, where it cancels the main dome's thrust.
• The overturning moment at the base is M = |H| · h (plus the earthquake: ground acceleration × every mass × its height). The eccentricity e = M / N must stay inside the kern: b / 6 for a bare pier, wider when a wall (0.3) or a buttress (0.6, 0.8 less per further step) is attached on the side the thrust pushes toward.
• Compression: N / capacity (pier 56, wall 32, minaret 30). Helpers add weight to the overturning check but stand on their own footing.
• A support that fails takes every piece it carries down with it. Minarets are cramped with iron and sway in a quake.

Controls

Action	Mouse / touch	Keyboard
Place the selected piece	click / tap a cell
Select a piece	tray	1-9
Rotate (arches, half-domes)	tray button, two-finger twist	R
Remove a piece	right-click, or the eraser tool	Del over a cell, E eraser
Remove the scaffolding (test)	tray button	Space
Stress colours on/off	HUD button	T
Thrust lines		hold V
Undo / hint	HUD buttons	Z / H
Orbit / zoom	drag on empty ground or right-drag; wheel, pinch
Pause	HUD button	P / Esc
Music / effects / language / fullscreen	HUD buttons	M / X / L / F

Settings are saved in localStorage under arena.mimar.settings; stars, the current commission and the finished layouts (which also rebuild the skyline) under arena.mimar.save, the best star total under arena.mimar.best. Turkish is the default language (English when the browser is not Turkish); phones start on the Low tier.

Flag	Effect
?auto	the bot plays every commission
?debug	fps, draw calls and errors on screen; window.mimarSim(seconds) fast-forwards
?sim=N	fast-forward N seconds before the first frame
?low	shadows off, half the particles
?lang=en	English
?level=N	start a commission directly
?nosave	do not read or write progress
?noassets	accepted; there are no asset files, so nothing changes
?botdelay=0.3	seconds between the bot's placements (default 0.12)

The live state is on window.mimar.

Screenshots

Running locally

Serve the folder over HTTP, for example:

python -m http.server 8000

then open http://localhost:8000/.

How it was made

Built by Claude Fable 5.1 with Claude Code from one prompt: prompts/mimar-sinan.md. sim.js holds the simulation and the commission data that are inlined into index.html; node test-levels.js checks every reference solution (all 15 pass under gravity and the earthquake test) and node calib.js prints the stress of canonical layouts. Everything else is generated in code, so there are no asset files and no credits to list.

Facts in the commission notes: Sinan called Şehzade (1548) his apprentice work; Süleymaniye (1557) uses two half-domes and stepped buttresses hidden in the side galleries; Selimiye (1575), his masterpiece, puts one great dome on eight piers. The thrust-line and middle-third ideas are the classic graphical statics of masonry; the numbers in the game are tuned for play, not for engineering.

Mimar Sinan is part of the Claude Game Arena series, where each game is built by a Claude model from one prompt. The other games: Hisar · Çay Ocağı · Çini Ustası · Martı · Kervan · Dolmuş · Peri Golf · Mehter · Boğaz Vapuru · Simit Fırını · Karagöz · Lale Bahçesi

Round 5: Kapadokya Balonu · Ebru · Kırkpınar · Çarşı Kaçışı

Round 6: Topkapı Gecesi · Hamsi · Pamukkale · Mimar Sinan

Türkçe

Mimar Sinan, Osmanlı camileri inşa ettiğin 3D yapı fiziği bulmacası. Şehrin üstündeki tepede ayak, kemer, yarım kubbe, payanda ve ağırlık kulesi yerleştirirsin; sonra iskeleyi kaldırırsın ve itki çizgileri kubbenin ayakta kalıp kalmayacağına karar verir. 3 dönemde 15 sipariş, her birinde 3 yıldız; bazılarında deprem testi var. Kurulum yok; masaüstünde ve telefonda tarayıcıda oynanır. Claude Fable 5.1 tarafından Claude Code ile tek bir prompt'tan yapıldı.

Oyna: https://furkiozknn.github.io/mimar-sinan/

License

MIT, see LICENSE.

Like the game? You can support new rounds on Buy Me a Coffee. The game stays free.