Platform games (or platformers) have gameplay primarily centered around jumping and climbing to navigate the character’s environment. They may have enemies or obstacles to avoid and fight or may just be pure jumping puzzles.
Generally, the player’s character in a platform game is able to jump many times their own height and player is offered some control over their movement in midair as well as the height and distance of their jumps. Settings tend to be vertically exaggerated with lots of uneven terrains that the player can leap to or fall off of.
Donkey Kong was one of the earliest and best-known platformers; the American gaming press classified it using the term climbing game at the time. Super Mario Bros. was one of the best-selling games of all time, with more than 40 million copies sold.