CifraDornell

raiopsLTD

About this game

A logic puzzle styled like a technical manual: bone-white paper, hairline grids, numbered everything and one sharp orange accent. A secret row of geometric glyphs hides behind the grid, and every row you enter is scored with filled and hollow marks. Each heading below is scored the way the game scores a row: E for exact, N for near.
0E 0N · An empty row
• Fill a row from eight glyphs: circle, triangle, square, diamond, plus, star, hexagon and half-circle. Press Enter to submit.
• A filled mark (E) means a right glyph in the right place. A hollow mark (N) means a right glyph in the wrong place.
• Tap a cell to clear it. Break the code before the rows run out.
1E 1N · The Casebook
• 30 levels, from three places with four glyphs up to six places with eight, some allowing repeats.
• Each level has a row limit and a par. Stars for cracking it, for staying within par and for using no hints.
• A hint reveals one place but costs a star. Levels open one after another.
2E 1N · The daily code
• One code a day, the same for everyone; its size and repeats depend on the date. No hints allowed.
• A 14-day log shows the rows you need each day, next to your daily streak.
3E 0N · The readout
• Codes cracked, boards locked out, average rows, hints, levels, stars, streak and quiz record, each in a numbered cell.
• A bar chart lists your fewest rows for each code width.
• 12 badges, from First Crack and Bare Hands to Six Wide and the full casebook.
4E 1N · The File quiz
• Ten-question rounds from 25 real facts on the history of secret writing: the Caesar shift, the Spartan scytale, the Vigenère square, Champollion in 1822, Bletchley Park and Turing, Morse, the Navajo code talkers and al-Kindi's frequency analysis.
5E 0N · Setup
• Haptics, a numbered manual and a progress reset.
• A drafting grid with a slow orange scan line and blinking memory cells runs behind every screen. Switch the animation off in Setup.
Plays offline, with no account and no ads.