This game made by Komix on Kongregate is a fun way to kill time. Seed of destruction has interesting graphics which look like they are drawn with a pencil. In the game you try to survive and destroy those who try to stop you from having fun on your seed. As you advance harder opponents appear. The tail of your seed is a powerful weapon which can deflect rockets and bounce them back. If you are accurate enough with your timing you can send the projectiles back to the attacked and thus making them go into flames and fall out of the skies. No registration is required to play this game.
The next game I recommend is Moby Dick and is made by camaleonyco, sballteam and SMilesInDaHat. You get to play as the great white whale and wreak havoc on the sea. As you eat sea creatures and sailors you grow bigger and bigger. The bigger you get the stronger you are.