Tilesets and water

I’ve been working on some tilesets and water.
A base!
Water works very well, tweaking player’s physics for it was pretty easy this time. As for tileset, it may seem like it doesn’t give a lot of variations, but I’ve been focusing on underground tiles more so far.
Underground Tileset
I know, I’m not a great artist, but it’s better than nothing, I guess? ;P