This is a nice idea. I like the multiplayer touch!
The sprites look a little blurry. You can try to fix that on your sprites make sure you select sprite Filter mode to Point (no filter) and If you're using a TileMap set the SpriteMode to multiple and in the sprite editor slice them in the size you need (i think 16x16 for what you used). You can also try to tweak the pixels per unit value see if it helps!
Good job!