Two teams. each team is trying to push the other one back, and touch the ball down anywhere on the opponents back line. "score a try"
H the goal is shaped like an H, and when a try is scored, they try and kick it between the posts, and over the mid bar. so in the top half of the H. You get extra points for that.
Whoever has the ball runs as far as they can (plus passing and teamwork) to push down towards the oppositions side. He normally gets tackled (only the guy with the ball gets tackled), and then passes to someone behind him, who will run foward again

no protection either

just a mouthguard... american footballers without helmets + pads? heh

they'll get trampled