What is a worthy website where on earth you can design a room? I'm trying to find a good website to design rooms. I sort...

I'm trying to find a good website to design rooms. I sort of want the furniture to be able to mvoe and flip and rotate adn go and get smaller or larger and be able to put it anywhere you want to. Also i sort of want it to have pseudo money where you have challenge and you get to have a certian amount of money to design a room.