Cytadela or Citadel is a 1995 first-person shooter developed by Virtual Design and released by Polish publisher Arrakis Software and in English by Black Legend for the Amiga 500 and later. The game is set on a prison island in the middle of a prisoner revolt. The game received generally positive reviews in the Amiga press. An open-source version for modern PCs was started in 2006. A fixed up version for the original Amiga was released in 2022. The source code to the original was also released.