Too hard, has some glitches
It was a fun game, but I found it too hard to get past level 3. If you click "Vamanos" several times, you'll aso skip levels. Doing this I was able to go from level 1 to level 4 or 5. It's also annoying how the clouds of methane follow you if you're above them. They also don't follow you if you're close to the ground. I'm not sure if you only meant for the clouds to rise, but I thought I'd let you know. Besides the difficulty, it was a fun game and very original. Keep up the good work.