Build Free Online Games - Play over 40,000 games online including online games , internet games , flash games , and all your own free games.
  Alien Invasion A Free Online Game
space defenders A Free Online Game
space defenders
Derby Driver A Free Online Game
Derby Driver
Plane Wars A Free Online Game
Plane Wars
Stacking Hats A Free Online Game
Stacking Hats
Quit Smoking A Free Online Game
Quit Smoking
 A Free Online Game
Tips: Setting the opponent movement speed to zero can give you a platform for you to do your own animation instead the opponent graphic. You could make an opponent popup and then hide again using animation instead of the built in movement.