17th Shape

Color Sort, Shape Sort · Updated May 6, 2026

About 17th Shape

Sliding one tile into another of the same shape replaces both with a single, larger form. The grid only accepts identical shapes into contact; mismatched neighbors can't merge. Each fusion advances the board toward the finish line of shape 17, but the space remains tight, and the control scheme demands deliberate swipes or key presses to line up eligible pairs without jostling unintended pieces.

Swipe or use arrow keys to slide matching shapes together. Each merge creates a new shape, and the goal is to see if you can reach number 17. You get a few shuffles and regroups to help, but after that it’s all strategy. It’s incredibly satisfying to line up the right pieces and watch them combine into something new.

How to Play 17th Shape

  1. Swipe your figure on the screen, use arrow keys, or swipe the mouse pointer to slide shapes in any direction.
  2. Any shape that collides with an identical shape merges into a single, larger shape.
  3. Keep merging to progress through higher shape numbers and try to reach shape 17.
  4. Use the 'shuffle' and 'regroup' buttons to reorder shapes when the board becomes stuck.

Frequently Asked Questions

What happens when two non‑identical shapes collide?

They do not merge. The moving shape stops against the other and no change occurs; you must slide it in a different direction.

How do the shuffle and regroup buttons work?

Shuffle randomly reassigns occupied grid cells to different positions. Regroup pushes all shapes into one contiguous area, sliding them to the top‑left corner.

Is the goal always shape 17, or does it vary by puzzle?

The official instructions specify that the goal is to reach shape number 17. The shape counters progress through whole numbers after each merge.

Can I use both keyboard and swipe controls in the same session?

Yes, the game accepts arrow keys, touch swipes, and mouse swipes interchangeably. You may switch between them at any time.

What fills the grid when all shapes merge up to a single shape 17?

Once shape 17 appears, the game ends in a win condition. The board may also become full with no more merges possible, ending the session.

Game Details

  • Category: Color Sort, Shape Sort
  • Last updated: May 6, 2026