Terraria started in a similar state :)
This is a good start to a game, and of course it needs a lot more content added to make it more engaging. You may consider adding an inventory so the things the player collects can be stored somewhere or consider adding enemies so there is some sort of danger in the world. Don't want to trek somewhere where you might die!
Assuming the code you have so far isn't too messy, there's a lot of room to expand your game!