Block Triangle Puzzle

Block Triangle Puzzle trades squares for triangles. Every piece is a shape built from triangles, rainbow coloured in the developer's words, and each puzzle is a design that those shapes have to fill. You drag the pieces onto the board until the design is complete. The developer compares the variety on offer to tangram puzzles.

Two rules matter most. Blocks cannot be rotated, so each one has to be used in the orientation it comes in, and there is no time limit, so you can take as long as you need over a design. The developer claims more than 2,000 levels and also lists achievements and a leaderboard. The game starts with a tap, and everything after that is done by dragging pieces into place, one at a time, until the shape in front of you has no space left.

Tap to start. Each puzzle shows a design to fill. Drag the geometric blocks, which are made from triangles, onto the board. They cannot be turned, so fit each one exactly as it is presented. When the design is filled, the puzzle is complete. Take your time, as there is no clock running.

Since rotation is not allowed, look at which way each triangle-based piece points before dragging it, and match it to a part of the design with the same angle. With no time limit, it costs nothing to test where every piece could go before placing any of them.

A tangram-style fitting puzzle made from triangle shapes, in a landscape frame. Pieces do not rotate and there is no time limit. The developer lists more than 2,000 levels, plus achievements and a leaderboard.

Hexa Puzzle Master uses six-sided pieces in a fixed orientation to fill a grid without gaps, and Ultimate Block Puzzle has you fill the outline of an object with blocks that arrive one by one.