Foamula

Two rows of numbers. One rule turns the first into the second. Find it, build it from bubbles, and do it in as few moves as you can.

A puzzle game for iPhone · iOS 16 or later

A Foamula level being solvedLevel 3, Double, and one. IN is 1 2 3 4 5 and GOAL is 3 5 7 9 11. The level opens with i in the row, so YOURS reads 1 2 3 4 5. The bubbles ×, 2, + and 1 drop into the row one by one, so the formula reads i × 2 + 1. While the formula is unfinished, YOURS shows a question mark in every cell. When 1 lands, all five YOURS cells turn green at once, 3 5 7 9 11, and the panel says Pattern found, 4 moves, three stars. INYOURSGOAL13?12325?24537?36749?489511?51011Pattern found4 movesf(i) =i×2+1i×2+1

How it works

  1. INGOAL13253749511

    Two rows of numbers

    IN is what goes in. GOAL is what has to come out. One rule turns every IN number into its GOAL number.

  2. 51f(i) =i×2i×2++1

    Build the rule from bubbles

    Drag numbers, signs and i from the basket into the row. YOURS shows what your formula gives, live.

  3. 4moves8moves12moves

    Fewer moves, more stars

    Every move counts. Match the best solution to earn all three stars.

What is in it

  • A daily puzzleA new puzzle every day, the same one for everyone.
  • The ladderA 21-step ladder that teaches every trick.
  • Practice500 puzzles in five weights, from Gentle to Brutal.
  • No accountYour progress stays on your iPhone.
  • FreeStuck? Watch a short clip and the game shows you the formula.