Ben 10 Swarm Smash - Alien Swarm
Gwen and his boyfriend Kevin are on a date and they were really having fun, but their little joy was become short when aliens came and gang up on them. Gwen and Kevin were outnumbered and were outmatch by the aliens so they got captured. When Ben 10 learns about it, he immediately set out to rescue them. Humungousaur is the only guy that can battle the Alien Swarm as he got the power for the job. Beat up those alien swarm and collect the omnitrix symbols that drops when they are dead. Grow bigger when you got enough omnitrix power and crush all the aliens that you see.