Fixel is a puzzle game made by Martin Magni. It consists of a stencil of an object or a structure (e.g. an orange) that has to be filled perfectly with a few given pieces that interlock into the stencil through their holes in order to win.
Fun fact: prior to Fancade 1.6, "Orange" was considered to be the most difficult level in the game.
Drag and drop pieces to the pegboard such that the correct colors are filled in.
Additional controls: you can use two fingers to zoom in and out, and pan the whole level.