Leander (also known as The Legend of Galahad or Galahad) is an arcade game released in 1991 by Psygnosis. The game was released for Amiga, Atari ST and Genesis / Mega Drive.
In the game, you play the knight whose goal is to save the Princess Lucanna. Wandering around the world of magic, you will join with various monsters and soldiers serving evil forces. During your adventure you will collect coins that you can exchange for better armor and weapons.
You will launch the game for Genesis from the link. Default control: ENTER - confirm selection; A, S, D - action keys.