BoltTumble

PRO CLEAR TRADING PROS LTD

About this game

Bolt Tumble is classic Sudoku, built for people who actually play it.
Every one of the 120 grids is generated and then checked by a solver, so each board has
exactly one solution and can always be finished by reasoning — never by guessing. Eight
circuits of fifteen grids take you from gentle Spark boards down to Tempest boards with
only 26 clues on the table.
A fresh Daily Challenge arrives every calendar day, seeded from the date, so everyone plays
the same board.
WHAT YOU GET
• 120 hand-paced grids across eight circuits
• Four difficulty tiers: Spark, Surge, Storm and Tempest
• A new Daily Challenge every day
• Pencil-mark notes with a one-tap notes mode
• Unlimited undo and a clean erase
• A hint that tells you WHY the digit fits, not just what it is
• Live mistake tracking with a per-difficulty allowance
• Running timer and a saved best time for every grid
• Three-star scoring: finish clean, with no mistakes and no hints, to take all three
• Automatic save — leave a grid half-finished and pick it up later
ASSISTS, EARNED NOT BOUGHT
Clean solves pay out Bolts. Spend them mid-grid on Hint, Scan (flags every wrong digit on
the board), Auto-Notes (fills every legal candidate) or Second Wind (hands back two
mistakes). There is one currency, it is earned by playing, and there is nothing to buy with
real money — no in-app purchases anywhere in the app.
SEVEN BOARD SKINS
Bolts also unlock board skins that re-paint the grid: Neon Circuit, Marble Hall, Blueprint,
Aurora, Tempest and Solar Brass, alongside the house Dusk Lattice board.
BUILT TO BE READABLE
Highlight the selected cell's row, column and box; turn the timer off if it distracts you;
switch on bold digits or high contrast; turn off every ambient animation with one Reduced
Motion toggle. Big tap targets, no tiny candidate icons — just crisp digits.
COMPLETELY OFFLINE
No account. No sign-in. No ads. No analytics. No network calls of any kind — the release
build requests no Android permissions at all. Puzzles are generated on your device, so the
app works on a plane, on the subway, and anywhere else with no signal.
Twelve badges track the long game, from your first solved grid to clearing all 120.

What’s new

First release.
• 120 solver-verified grids across eight circuits
• Four difficulty tiers and a Daily Challenge
• Pencil notes, unlimited undo, explaining hints, mistake tracking
• Bolts economy with four in-grid assists
• Seven unlockable board skins
• Twelve badges
• Readability and reduced-motion settings
• Fully offline — no ads, no accounts, no permissions