Fistful of Lead game. Evil robots vs valiant Earth defenders.
My son brought a friend who never played a tabletop game before.
I must say Fistful of Lead is perfect for first-timers. My son's friend picked it up within 10 minutes and both had fun.
I kept the scenario simple: evil robots had set up a 3d robot printing device and could assign 1 or 2 robots to printing new ones (cumulative roll of 20). Valiant Earth defenders had to stop the robots.
I added a truck full of gas canisters which they both tried to blow up to take out crew members of the other side.

T.