Play Marheaven - Knockin' on Heaven's Door (J)(Supplex) Online

Marheaven: Knockin' on Heaven's Door is a Japan-exclusive Game Boy Advance release from 2003, developed by Amedio and published by Nintendo. It arrived late in the GBA's life, a time when developers were pushing the hardware with ambitious sprite work and fast-paced action games that still respected the handheld's pick-up-and-play roots.

You control a young fighter named Marheaven, navigating side-scrolling stages filled with enemies and environmental hazards. Your main goal is to battle through each level, defeating bosses and progressing the story. The combat relies on a flexible combo system; you can chain together light and heavy attacks, launch foes into the air, and juggle them with rapid strikes. Movement is fluid, with dashes and double jumps letting you close distance or evade attacks quickly. The game moves at a brisk pace, and while not overly difficult, it demands timing and awareness to avoid being overwhelmed. It feels energetic and responsive, like the screen can barely contain the action.