ChipStack is a fast, polished, fully client-side arcade built around two pillars:

• A real Tetris engine — fixed-timestep logic, full SRS with wall-kicks, 7-bag, tunable DAS/ARR/SDF, lock delay with move-reset, T-spins, back-to-back & combos. Rendered on a 2D canvas, not the DOM. The feel is the product.
• A play-money casino — slots, blackjack, roulette and Jacks-or-Better video poker, each a self-contained module behind one shared wallet, with authentic house edges baked into the math (because the chips are free, the odds should still feel real).

There is no real-money payment of any kind. The signature feature is the opposite: an Add Chips button that drops any positive integer into your balance instantly — no cost, no limit, no friction.

The hard part, done right:

• Fixed-timestep loop — logic runs at a locked 60 Hz off an accumulator, decoupled from requestAnimationFrame render. The feel is identical at 60, 144 and 240 Hz.
• SRS — canonical rotation states, separate I wall-kick table, plus a 180° kick set.
• Movement — DAS and ARR are computed off the logic tick, never browser key-repeat. Defaults: DAS 133ms · ARR 0ms (instant) · SDF ×ばつ — all editable; ARR up to 83ms, SDF up to ∞.
• Lock delay — ~500 ms with move-reset and a 15-move reset cap so you can't stall.
• Gravity — guideline per-level curve; T-spin detection via the 3-corner rule (front-corner + kick upgrade for full vs mini); back-to-back ×ばつ1.5 and combo scoring.
• Rendering — neon beveled blocks, smooth sub-cell fall, ghost, hard-drop & line-clear particles — all on canvas, with shadowBlur limited to the active piece for 60fps.

• Vite + React 19 + TypeScript (strict: verbatimModuleSyntax, erasableSyntaxOnly)
• Tailwind v4 + shadcn-style primitives (Radix + cva) — synthwave design system
• Zustand (+ persist) for wallet / settings / stats
• Framer Motion for UI; GSAP for casino flourishes
• HTML5 Canvas 2D for the playfield and reel / wheel animations
• Web Audio API — a single manager synthesizes every SFX (no audio files)

npm install
npm run dev # http://localhost:5173
npm run build # typecheck (tsc -b) + production build

No environment variables, no services. Everything is local.

src/
 games/tetris/ engine · pieces (SRS) · scoring · renderer · useTetris · shell
 games/{slots,blackjack,roulette,videopoker}/ casino modules
 store/ wallet · settings · stats (Zustand + persist)
 components/ui/ shadcn-style primitives
 lib/ rng (seeded) · audio · format · keys

See ARCHITECTURE.md for the module contracts and design-system/MASTER.md for the visual system.

ChipStack uses fake chips only to recreate the feel of arcade and casino games. It has no real-money mechanics, no purchases, and no way to cash out. It is a toy.