What is Moduli? Moduli is a number puzzle game consisting of two types of number puzzles: modTiles and Cross-mod. The central feature connecting both puzzles is the commanding role of golden moduli numbers in determining the behavior of the puzzles.

What are golden moduli? Each puzzle in Moduli contains one or more gold colored numbers which are called golden moduli. These golden moduli determine how counting works within the puzzle. When counting reaches the golden modulus, it instead starts over at zero and continues from there. For example, counting "1, 2, 3, 4, 5, 6, 7, 8, 9, 10" with a golden modulus of 5 would instead be "1, 2, 3, 4, 0, 1, 2, 3, 4, 0".

What is modTiles? The main puzzle type in Moduli is the modTiles puzzle game. The goal is to clear (set to zero) all of the tiles at the same time. When a tile is tapped, that tile and all adjacent tiles increase by one subject to their golden moduli. This puzzle is a bit like a numerical Rubik's Cube with regard to the way that making one small change causes changes to ripple through the whole puzzle.

What is Cross-mod? Cross-mod is the second puzzle type in Moduli. The positions of tiles in the puzzle are swapped with each other until the sums of the rows and columns are equal to the numbers on the ends subject to their golden moduli. It is somewhat similar to Sudoku in that each square must meet multiple shared requirements at the same time.

Is the game difficult? Yes, the game gets difficult very quickly. Here are some quotes from early playtesters: "This game is too hard." "Are there any more easy puzzles like the first one?" Moduli is the game for you if you like challenging puzzles.

Where is Moduli? Moduli is available on the Google Play! store for Android devices. Two versions are available: Moduli FREE Edition is available as a free download and Moduli Master Edition is available for $1.