There are plenty of free graphics resources if you know where to look. Use simple placeholder graphics. Make simple tiles. If the game is fun, work on gettin

There are plenty of free graphics resources if you know where to look. Use simple placeholder graphics. Make simple tiles. If the game is fun, work on getting better graphics. If you have a working game with simple graphics that's fun, use one of those freelancer sites to get some better art. You also need sounds.