Crossed Swords ROM

An interesting action-adventure game where you play as a knight fighting enemies from a behind-the-player Punchout-like perspective. You are tasked with saving the princess, who is kidnapped while you talk with her at the castle. You can buy better weapons and restore your health at shops between levels, with each weapon having its own special attack. Some levels have multiple pathways you can choose, with new weapons discoverable in some areas. A second player can join in to play the campaign in co-op mode.
The game is very long, and can get repetitive if you're going for playing the whole thing in one sitting.