Captain Silver is an action and adventure game where you play as Jim, a brave young lad on a quest to find Captain Silver's secret treasure hoard. The journey takes him to different islands in the Eastern Seas, where he must fight his way through various creatures and obstacles.
The gameplay involves exploring six different scenes, including villages, ships, caves, and tropical islands. Jim must use his sword to defeat enemies, collecting gold and items along the way. However, enemies leave behind letters that spell out the word "CAPTAIN SILVER". If Jim collects all these letters, he earns an extra life.
Jim starts with a basic sword but can collect power-ups like stars, which give him more efficient kills, and other items that boost his abilities, such as extra time or increased jumping height. He must also defeat bosses in each scene to progress. There is also a time limit for completing each scene, adding an element of urgency.