Citadel is a platform game with some puzzle solving elements. The game is centered around a castle, requiring players to find five hidden crystals and return them to their rightful place. Outside of the castle there are outside areas (including a wasteland, a pyramid, a sea and an island).

Citadel is a platform game with some puzzle solving elements. The game is centered around a castle, requiring players to find five hidden crystals and return them to their rightful place. Outside of the castle there are outside areas (including a wasteland, a pyramid, a sea and an island).