In Spelunky Classic, players navigate through randomly generated caves filled with traps, enemies, and treasures, using their wits and reflexes to survive. The game emphasizes exploration and resource management, as players must make strategic decisions about how to approach each level.

The storyline of Spelunky Classic revolves around a treasure hunter exploring a series of caves in search of riches and adventure, with the ultimate goal of uncovering the mysteries hidden within the depths. Each playthrough offers a unique experience due to the game's procedural level design.

Spelunky Classic stands out with its permadeath mechanic, meaning that when players die, they must start over from the beginning, which adds a layer of challenge and encourages repeated playthroughs. Its blend of platforming, puzzle-solving, and roguelike elements has made it a beloved title in the indie gaming community.