🎹 Neon Tiles — Bingo

A neon-styled 4-lane rhythm game built around the spelling-game classic "B-I-N-G-O" — the chart was transcribed directly from sheet music, capturing both the verse melody and the spelled-out "B-I-N-G-O" chorus. Cyberpunk visuals with a cyan→magenta gradient palette, ambient drifting tiles on the start and game-over screens, and the Orbitron typeface give the campfire singalong an arcade-cabinet makeover.

🎮 How to Play

• Tap / Click — Tap tiles on mobile, or click them with the mouse on desktop.
• Keyboard — Use A S D F for the four lanes (left → right).
• Hold notes — For taller tiles, keep the key/finger pressed until the tile clears.
• Pause — Space or P
• Mute / Unmute — M
• Quick start / restart — Press D while any overlay is showing.

✨ Features

🎵 Real Score, Real Pitch

• 13 measures transcribed directly from sheet music — covers the full verse ("There was a farmer, had a dog…") and the chorus that spells out B-I-N-G-O one letter at a time.
• Every note plays at its actual pitch in C major (G4 / A4 / B4 / C5 / D5 / E5 / F5 — a clean diatonic six-note range).
• Tempo is ♩=90, with each game beat = one 8th note (333 ms) — a friendlier base pace than most charts in the series, leaving room for the cycle speedups to actually feel different.

🎶 Hold Tiles Built Around the Chorus

• The "B—I—N—G—O" spelling at the chorus's heart is rendered as a sequence of 2-beat hold tiles — one for each letter — so you literally hold each letter the way the song does.
• The mid-verse "had-a-dog" half-note pickups land as 2-beat holds too, giving the song its characteristic gentle gait.
• The chart closes on a 4-beat REST, a deliberate breather before the cycle restarts at a higher tempo and key.

🚀 Progressive Difficulty + Cycle Flash

• BPM increases by +12.5% per cycle (90 → 101 → 112.5 → 124...). Starting at ♩=90 means even cycle 3 stays merely brisk rather than panic-inducing.
• Each cycle is also transposed up by a whole step (2 semitones), lifting the chorus's "B-I-N-G-O" letters higher and higher up the keyboard.
• Cycle transition flash: every new cycle pops up a centered banner — CYCLE 2 / ♪ +2 · ⚡ +12% — with a scale-and-glow animation, so the moment you survive into harder territory feels earned.

💢 Visible Miss Feedback

• Tap on empty space, hit the wrong tile, release a hold too early, or let any tile fall off-screen — all trigger a red flash at the relevant tile (and a circle pulse at the tap point), held for 450 ms.
• Plays a dissonant low buzz with downward portamento so misses are clearly audible.
• The game ends after the miss display, giving you a clear "what just happened" beat.

🎨 Polished Neon Visuals

• Hand-tuned per-lane colors along a cyan → blue → purple → magenta gradient that matches the logo.
• Glowing tube borders, soft outer halos, and scanline textures only inside the active press zone so the tappable area is instantly readable on hold tiles.
• Ambient floating tiles drift continuously down behind both the start screen and the game-over screen.
• Animated "neon tile" START button that physically slides down the board into the game on press — no jarring screen transitions. Same treatment on the PLAY AGAIN button.
• Score-burst flash animation on every successful hit.

🧠 Smart Lane Distribution

• Lanes are picked dynamically rather than randomly: the algorithm avoids consecutive same-lane spawns and balances left vs. right side usage.

🎯 Forgiving Hold Timing

• Hold tiles only require 75% of the full duration — releasing slightly early still counts.
• The hold-progress fill uses a soft gradient fade at its top edge instead of a hard line, so there's no visible pass/fail boundary to fixate on.

🎼 Scoring

• 10 points per beat cleared (so each 2-beat "B/I/N/G/O" letter hold = 20).
• High score saved locally and shown on the start and game-over screens.

📱 Mobile-First Input

• Multi-touch support — different fingers on different lanes are tracked independently.
• Coordinate-based hit testing rather than lane-only, so taps register exactly where your finger lands.
• touch-action: none and user-scalable=no to prevent scrolling/zooming during play.
• Viewport sized in vw units (9:16 portrait) so it scales perfectly across phone screens.
• Mouse-up listener attached to window so releases register even if the cursor leaves the canvas.

🛠️ Tech Stack

• Pure HTML / CSS / JavaScript — zero dependencies, zero build step.
• HTML5 Canvas for the 360×640 game board with hand-rolled rounded-rectangle drawing and gradient fills.
• Web Audio API with OscillatorNode square-wave synthesis — fundamental + octave overtone, with separate envelope shapes for taps (gate), sustained holds, and the dissonant miss buzz.
• Auto-generated chart from MusicXML score data via a custom Python converter, with automat