Post-Mortization spans fifteen individual levels, starting at the third floor and progressing through the house until you reach the front door. There are also two staircase levels, which are short, plot-focused rooms, located after every five levels.
The rooms are designed to teach the player and progress in complexity as the game goes; to this end, levels 1-5 are focused on teaching basic abilities, levels 6-10 are focused on combining those base mechanics in novel ways and introducing mechanics that iterate on those abilities, and levels 11-15 are focused on plot development and combining a number of mechanics in a thrilling finish.
Please view the rooms to the right. The art is done by Gabriel Engelmann.