BrainRot // Logic Arena
Difficulty Easy Drift
Mode Digit
Mistakes 0 / 5
Completion 0 / 81
No cell selected
Select a cell to inspect candidates and pencil marks.
Tap / click cells or use arrows / WASD
Numbers 1-9 place digits • N toggles notes • H spends a hint
Timer
00:00
Score
0 pts
Streak
0 x
Hints
3 left
Lock onto a cell, punch digits from the pad or keyboard, and keep the fault count under five.
Run Setup & Assist
Conflict Vision Flag rule clashes instantly when a row, column, or box breaks.
Peer Glow Illuminate row, column, and box relationships for the active cell.
Echo Numbers Highlight every matching digit to accelerate scans and patterns.
Auto-Clean Notes Strip pencil marks from peers when a confirmed digit lands.
Ambient Audio Low procedural pulses, UI chirps, mistake stabs, and win arpeggios.
Touch-ready, keyboard-fast, fully standalone. Built for sandboxed iframes with nothing but scripts and audacity.
Intel & Shortcuts

Run Intel

The chamber is dormant. Start the run, pick clean lines, and the grid will reward momentum.

Selected Cell

No lock. Tap any editable tile to inspect coordinates, candidate count, and stored notes.

Hotkeys

Move selectionArrows / WASD
Place digit1 - 9
Erase selected0 / Del / Backspace
Toggle notesN
Use hintH
Start / restartSpace

Scoring Matrix

Correct digit: +100 plus streak bonus. Notes: +4. Hint: -90. Wrong digit: -40 and streak reset. Finish fast, finish clean, and the neon crowns you properly.

Neon Rift // Launch Briefing

Sudoku Overdrive

This is not a sleepy newspaper grid. It is a pulse-driven logic sprint: curated valid boards, precision notes, escalating streak score, five-strike failure state, haptic-feeling pointer controls, and a full celebration when you clear the chamber.

Core Real Sudoku
Assist Stack Notes + Hints
Atmosphere Audio + Sparks
Run Cleared // Logic Crowned

Grid Purged

You threaded the neon perfectly. The chamber recognizes crisp lines, clean logic, and a refusal to panic.

Time 00:00
Score 0
Mistakes 0
Run Failed // Chamber Collapse

System Breach

Five faults. The grid dimmed, the pulse snapped, and the chamber dumped you back into the void.

Faults 5
Filled Cells 0
Score 0