🎮 Play Mystery of the Capsmith Demo Online (Nintendo 64)

Mystery of the Capsmith Demo is an acclaimed Nintendo 64 homebrew project and ROM hack of Super Mario 64 developed by Dorrieal. Originally created as an entry for a hacking competition, this demo overhauls the original game’s mechanics by introducing three unique power-ups—the Light Cap, Water Cap, and Wind Cap—across three custom-designed levels with a highly stylized aesthetic.

How to Play

Your objective is to explore the custom levels and master the unique abilities of the new caps. Since this is a Nintendo 64 title, the standard controls apply: use the Analog stick for movement, A to jump, B to attack/interact, and the Z-trigger to crouch or ground-pound. In the browser emulator, these are typically mapped to your keyboard’s arrow keys for movement, X for A, C for B, and Shift or Space for Z.

Tips

• Experiment with the Light Cap to create mid-air platforms and perform wall-kicks to reach high areas.
• Use the Wind Cap’s soaring ability to traverse large gaps across the clouds.
• The Water Cap allows you to slide through the air and interact with the environment, such as growing giant flowers.