Play Ninja Jajamaru - Ginga Daisakusen (Japan) (Beta) Online
Bounce between janky floating platforms as a tiny ninja, tossing shurikens at goofy enemies in this unfinished NES relic—some levels just stop mid-air like the devs walked away.
Ninja Jajamaru: Ginga Daisakusen was a Japan-only beta release for the Nintendo Entertainment System, developed by Jaleco. It never saw a full commercial launch, existing as an incomplete build from the late NES era when platformers and action titles were diversifying in both style and ambition.
You control Jajamaru, a nimble ninja tasked with navigating side-scrolling stages filled with floating platforms, bottomless pits, and quirky foes. Your main goal is to reach the end of each stage, using shurikens to defeat enemies and careful jumps to avoid hazards. The game features screen-by-screen progression, with some areas requiring backtracking or exploration to uncover hidden items or alternate routes. The pacing is brisk, though the level design can feel disjointed or abruptly unfinished, a hallmark of its beta status. It feels like exploring a rough sketch of a game, full of unrealized ideas and sudden stops.
Download Ninja Jajamaru - Ginga Daisakusen (Japan) (Beta) ROM
You can download this ROM to play Ninja Jajamaru - Ginga Daisakusen (Japan) (Beta) offline using an Nintendo (NES) emulator (Top Emulators).
*This ROM is provided for backup and educational purposes only.
