MAP33: CyberSweeper (Eternal Doom)

MAP33: CyberSweeper is the bonus level of Eternal Doom. It was designed by Jim Flynn and uses the music track "Cyber Hunt". It is contained in a separate WAD file CSWEEPER.WAD, which must be loaded along with ETERNAL.WAD. It occupies the MAP01 slot.

Overview
CyberSweeper is a Doom-styled recreation of the prominent puzzle video game Minesweeper. It features 6x6 board with eight cyberdemons randomly distributed along it, in lieu of mines from original games. In place of flags, revealed blank squares contain health bonuses, which must be collected in order to finish the level. Lastly, transparent linedefs indicate the number of adjacent trapped squares with digits on their middle textures.

Eternal Doom installation includes an utility RANCY.EXE, which can be used to randomize the cyberdemons' placement along the board for each subsequent playthrough.