🎹 Neon Tiles — Itsy Bitsy Spider

A neon-styled 4-lane rhythm game built around the timeless nursery rhyme "The Itsy Bitsy Spider" — the chart was transcribed directly from sheet music, capturing both the rising-spider verses and the "down came the rain" descent. Cyberpunk visuals with a cyan→magenta gradient palette, ambient drifting tiles on the start and game-over screens, and the Orbitron typeface give the spider's waterspout climb an arcade-lit 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

• 17 measures transcribed directly from sheet music — the whole rhyme: the spider climbing the waterspout, the rain washing it out, the sun drying everything up, and the final climb-back-up cadence.
• Every note plays at its actual pitch in F major (C4 through C5 — a tidy octave-spanning melody that matches the spider's upward arc).
• Tempo is ♩=120 in compound 6/8 feel — each game beat is a dotted-quarter subdivision, so 1-beat and 3-beat tiles correspond to the song's natural eighth-and-dotted-quarter rhythm.

🎶 Hold-Heavy Chart for a Lullaby-Like Feel

• The chart is dominated by 2-beat and 3-beat hold tiles rather than rapid-fire taps, because the song's character lives in its sustained, lilting motion — the spider doesn't jab up the waterspout, it crawls.
• The dotted-quarter "spider" / "water" / "spout" holds all land on 3-beat tiles, giving each phrase a satisfying breath of release before the next.
• The chart includes the song's signature 2-beat REST + pickup pattern at m5 ("Down came the rain…") that signals each new verse line.

🚀 Progressive Difficulty + Cycle Flash

• BPM increases by +12.5% per cycle (120 → 135 → 150 → 165...). The held-note dominance means the speedup hits the hold-timing leniency window rather than your tap reflexes.
• Each cycle is also transposed up by a whole step (2 semitones), sending the already-airy melody into ever-higher octaves.
• 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. With this chart's hold-dominated structure, that leniency really matters.
• 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.
• The chart's longest holds are 3-beat dotted-quarter sustains for the song's signature words — a small but satisfying ring-out on each.

🎼 Scoring

• 10 points per beat cleared (so a 2-beat hold = 20, a 3-beat dotted-quarter = 30).
• 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