Answer:
one game you can play by yourself is what I like to call "Bouncing Balls" this game can only be played on a trampoline with a net. What you do is get some balls (any balls) and place them in the middle of the trampoline. What you have to do is jump from one end of the trampoline to the other without getting hit.
You can also have fun on a trampoline by learning tricks. If you go to a Trampoilning school or Gymnastics club they will teach you tricks.