Play Chalvo 55 Online
You play as a tiny robot that curls into a ball, bouncing off walls at weird angles to solve puzzles—mess up the physics and you’ll overshoot, nail it and you’ll feel unstoppable.

Chalvo 55 came out for the Game Boy in 2002, published by Natsume. It was a late release for the system, arriving when many players had already moved on to the Game Boy Advance, so it felt like a quiet discovery for those still digging through the handheld's library. The game doesn't try to be a big, cinematic adventure; it's a compact, mechanics-driven experience built around a single, unusual idea.
You control a small, spherical robot named Chalvo, and your main goal is to navigate through a series of single-screen puzzle rooms. The core mechanic is your ability to bounce. You build momentum by rolling, then launch yourself off walls and obstacles, ricocheting around the stage to hit switches, break blocks, and reach the exit. The physics are precise and unforgiving; a poorly aimed bounce can send you flying into a hazard or missing your target completely, forcing you to reset the room. Success depends on judging angles and timing your movements carefully. It feels like solving a physics problem with your thumbs, and pulling off a tricky series of bounces is deeply satisfying.

Download Chalvo 55 ROM
You can download this ROM to play Chalvo 55 offline using an Game Boy emulator (Top Emulators).
*This ROM is provided for backup and educational purposes only.