Tilt your phone, move the electron (blue) and try to catch the proton (green). But watch out! You can't touch neutrons nor positrons (gray and red)!
Major game update v 2.0: -New engine -IAP - buy editor and hide ads -All levels from full Hydrogen (Classic) and several new added -Completely redesigned UI -Sounds -Custom maps are now stored on SD card (or mass storage if card not present)
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.