This game can be played solo or with another user (if someone else is online). While you are playing, other users can join in. I realized "Pong" is actually a turn-based game, so it will work with cloud variables. The "lag" happens while the ball is in the other player's court, and your own side runs smoothly.
Spinning Earth animation from http://commons.wikimedia.org - I resized the animated gif using http://resizepic.com - I broke the animated gif into frames using http://gifninja.com Robot and Soccer Ball art came from http://openclipart.com - I rotated the ball to create frames using the app iDraw - the REMOTE PLAYER overlays were also drawn using iDraw Space Backgrounds came from http://pixabay.com and wikimedia All the media included in this project were acquired and used legally