It's a Point and-click, puzzle game of Ben 10 from 2006, playable in the old cartoon network site.
This Ben 10 game has Ben, Gwen and Grandpa Max solving puzzles on an epic adventure to stop Vilgax. But first you'll have to go through Kevin Levin, who has escaped from the Null Void and is out for revenge. Use the Rustbucket and Plumber technology like the Null Void Projector to stop him.