Place your first tile.
Place the same type of tile more than 10 times.
Keep your world alive for 100 seconds.
Keep your world alive for 500 seconds.
Keep your world alive for 1000 seconds.
Create a world on Earth.
Create a world on Mars.
Create a world under the sea.
Place a total of 100 tiles in your world.
Place a total of 250 tiles in your world.
Place a total of 500 tiles in your world.
Place a total of 1000 tiles in your world.