From Deviantart user Cakecrumbs:

The cake aims to be a level-accurate depiction of levels 2.1 and 2.2. I chose those levels as it allowed me the variety to depict three different ‘places’ on tiers that could be joined relative to one another. I picked level 2 as I originally thought I could fit the whole level on the cake, but as I began I realised even these beginning levels were too long.

The cake took about 5 days to finish. There was a lot more detail than I expected. Everything from the stripes on the pipes to the embossing of the stones took a lot of time. Everything is hand cut, mostly with a craft knife, and either embossed or painted (with edible ink) to add the details. It’s all fondant or marzipan, save for the coral and the waves, which are piped from royal icing.

[Source: Cake Crumbs | Via OW]