Hidden object

Puzzle video games are a genre of video games that emphasize puzzle solving. The types of puzzles can test many problem-solving skills including logic, pattern recognition, sequence solving, and word completion. The player may have unlimited time or attempts to solve a puzzle, or there may be simple puzzles made difficult by having to complete them in real-time, as in Tetris.

Puzzle games focus on logical and conceptual challenges, although often the games add time-pressure or other action-elements. Although many action games and adventure games involve puzzles such as obtaining inaccessible objects, a true puzzle game focuses on puzzle solving as the primary gameplay activity. Games usually involve shapes, colors, or symbols, and the player must directly or indirectly manipulate them into a specific pattern.

Rather than presenting a random collection of puzzles to solve, puzzle games typically offer a series of related puzzles that are a variation on a single theme. This theme could involve pattern recognition, logic, or understanding a process. These games usually have a simple set of rules, where players manipulate game pieces on a grid, network or other interaction space. Players must unravel clues in order to achieve some victory condition, which will then allow them to advance to the next level. Completing each puzzle will usually lead to a more difficult challenge, although some games avoid exhausting the player by offering easier levels between more difficult ones.

There is a large variety of puzzle games. Some feed to the player a random assortment of blocks or pieces that they must organize in the correct manner, such as Tetris, Klax and Lumines. Others present a preset game board or pieces and challenge the player to solve the puzzle by achieving a goal (Bomberman, The Incredible Machine).

Puzzle games are often easy to develop and adapt, being implemented on dedicated arcade units, home video game consoles, personal digital assistants, and mobile phones.

...
Wikipedia