Hey Tomppak, thanks for playing with the game. :)
Sorry fo the late answer, I was away during the holidays. The page description is perhaps a little misleading and the game has many placeholders right now.
Level 1 is the only existing level in the game right now. In that there is 4 parts. In the page description I refer to these parts as levels, which I admit is quite misleading. Sorry for that. :)
In 2020 I'll continue to work on this game, so you will get more content for sure. :)