Stickers By Numbers is a color-by-number, hidden-object game that features the use of stickers instead of paint swatches or colored shapes. Across 15 levels, the game displays coloring pages of scenes marked with numbered shapes. The player's goal is to correctly place stickers on the pages by following paint-by-number rules.
In the first unlocked scene, the player receives a set of three colorful stickers below it. They must search for the number above the sticker on a blank numbered object, compare the outline of the object against the outline of the sticker, and then drag and drop the sticker on the page. As they place stickers, the game adds new ones to the set.
Stickers By Numbers requires the player to complete the scene to unlock the next level and scene. That said, it doesn't require them to cover the entire page with stickers. The stickers only� highlight some objects. The game completes a scene by painting large spaces between the stickers.
To place every sticker, the player must drag the coloring page up and down and side to side. They must affix stickers in the open, behind or under other stickers, and partially behind the edges of the frame around the scene. With overlapping stickers, they must rely heavily on the numbers as a guide. If they want to fully appreciate the sticker artwork, they should always take a moment to enjoy the sticker before placing it.