A fleet of aliens are on a path of destruction, and Earth is their next stop. Due to a malfunction, the ship makes a crash landing. Onyx, the mighty Baryonyx, decides to fight back. By eating the radioactive batteries that fell from the ship it's in crash landing, he is able to mutate himself. Find the various colored batteries and eat them up in order to use the associated weapons. Red batteries let you eat red weapons, it's as simple as that! Each weapon has different abilities, and the more batteries a weapon requires the more powerful it is. Bite, stomp, and tail swipe aliens away as you hunt down the mothership in order to stop the invasion. The smaller aliens may be weak alone, but they're deadly in large numbers. Watch out for hoards of invaders lurking around the area. Along the way you'll encounter ever stronger enemies with greater and greater weapons. Low on health? Don't fret! You can eat aliens to get yourself back into the fight. You can use the environment to your advantage as well. Shove aliens into trees and rocks to deal extra damage. With the power of these mutations, Onyx is able to utilize the enemies weapons, and fight fire with fire! Collect multiple weapons to unleash devasting combos onto those pesky invaders! Stop those aliens from causing a mass extinction!