Ghosts 'n Goblins Amiga

Ghosts 'n' Goblins is the authentic home computer version of the  classic coin-operated arcade game from Capcom, authors of best sellers  including the world beating Commando and 1942.

Ghosts 'n' Goblins is the classic fighting fantasy story, heroic  knight to rescue beautiful maiden from clutches of demonic Overlord.  Featuring some stunning effects and graphics, this technically  excellent game is clearly another winner from the Elite/Capcom stable. — Instruction Booklet

Ghosts 'n Goblins is a 1985 side-scrolling platform game developed  by Capcom for video arcades and has since been released on several other  platforms. It is the first game in the Ghosts 'n Goblins franchise.

Gameplay

Ghosts 'n Goblins is a platform game where the player controls a  knight, named Sir Arthur, who must defeat zombies, ogres, demons,  cyclops, dragons and other monsters in order to rescue Princess Prin  Prin, who has been kidnapped by Satan, king of Demon World. Along the  way the player can pick up new weapons, bonuses and extra suits of  armour that can help in this task.

The game is often considered very difficult by arcade standards and is  commonly regarded as one of the most difficult games ever released.  The game is considered by Gametrailers.com to be the world's second  most difficult game ever made. The player can only be hit twice  before losing a life (the first hit takes away Arthur's armour, and the  player must continue on in his underwear until completing the level,  or finding replacement armour). If the player loses a life, he is  returned to the start of the level, or the halfway point if he has  managed to get that far. Furthermore, each life can only last a  certain length of time (generally around three minutes), the clock  being reset at the start of a level. If the clock does run out, the  player instantly loses that life.

After defeating the final boss, but only with the cross weapon  (if the player does not have the cross weapon, they will be prompted  that it is needed to defeat the boss and restart at the beginning of  level 5 and must repeat round 5 and 6 again regardless if the weapon  is obtained immediately or not) for the first time the player is  informed that the battle was "a trap devised by Satan". The player  must then replay the entire game on a higher difficulty level to  reach the genuine final battle.

The Commodore 64 version, released in 1986, is known for its music by  Mark Cooksey, which borrows from Frédéric Chopin's Prelude No. 20. Due  to the limited resources on the Commodore 64, it was somewhat different  from the arcade version. It only features the Graveyard and Forest, The  Ice Palace, The Floating Platforms and Firebridge and The Caves in that  order. The player also starts the game with five lives. The demon that  kidnapped the princess replaces Astaroth in the title screen.  Additionally, the cyclops (or "Unicorn") is the boss of levels one to  three and the dragon is the final boss.

Ghosts 'n Goblins was also ported to the ZX Spectrum, Amstrad CPC, MSX,  Atari ST, IBM PC compatibles.

Source:Wikipedia