title: Can i write a modern/good game without using actors/sprites
body: <p>I have got one sily question. I write a game in libgdx. But my friend always use actors and sprites. But i dont use this class. In all parts or elements of game i extends Sprite. Then i use a array list for using to save elements.
  I write game like that: reading input, update, check collision and render. Its ok or not ?</p>