Plus15

Engine Lane Capital

In-app purchases

About this game

Plus15 (+15) – A Unique Logic Puzzle Game

+15 is a clean and surprisingly challenging logic puzzle game built around a simple rule: numbers must combine to exactly 15.

Each puzzle board contains numbers that must be divided into 15 unique regions. Within every region, the numbers must add up to 15. It sounds simple, but the spatial rules quickly turn this number puzzle into a deep brain-teasing challenge.

Tiles can only connect horizontally or vertically, never diagonally. As you build regions across the board, every move affects the remaining possibilities. What looks correct at first often turns out to be wrong a few steps later.

The twist: every puzzle has exactly one solution. This is a pure logic puzzle — no guessing required.

How the Puzzle Works

• Select adjacent tiles to create groups
• Each group must total exactly 15
• Every puzzle contains 15 separate regions
• Tiles must connect up, down, left, or right
• Diagonal connections do not count
• Each puzzle has one unique solution

At first the puzzles seem simple. Then the spatial patterns begin to overlap and the real challenge begins.

Puzzle Difficulty Levels

+15 includes puzzles across several difficulty levels:

• Easy puzzles to learn the mechanics
• Medium puzzles that require real spatial thinking
• Hard puzzles for serious puzzle solvers

Some puzzles look obvious… until one misplaced region forces the entire board to change.

Features

• A completely new spatial logic puzzle mechanic
• 15-region puzzle design that creates deep strategy
• Every puzzle has one correct solution
• Clean, minimalist puzzle interface
• Smooth and satisfying tile selection
• Optional hints when you get stuck
• Regular puzzle updates
• A relaxing but mentally engaging brain game

For Puzzle Fans

If you enjoy games like:

• Sudoku
• logic puzzles
• number puzzles
• math puzzles
• brain training games
• daily puzzle challenges

then +15 offers a completely new type of puzzle experience.

Simple to understand. Surprisingly challenging to master.

Can you find the one correct solution?

What’s new

New One Shot game mode. Lock each region with confidence... one incorrect lock ends the challenge.