Tunnel of Lava is a single-player Bowser mini-game in Mario Party 7.
The Mecha-Koopa ate the key and it's up to you to find it. The Mecha-Koopas will start spinning and the character have to jump on them to get the key. As time passes by, they will breathe fire shortly after their eyes glow red. If the character gets caught by the breath, then you're stunned for a moment. If you find the Mecha-Koopa that's holding the key, then you win. But if you don't find it when the Mini-game Timer runs out, then you'll lose coins or even a star.
- - Move
- - Jump