Aglab's Daily Katze Hack is a ROM hack created by aglab2.
This hack is a series of short unique challenges for Mario to overcome, with strong visuals and custom mechanics. It was created as part of a community event lead by katze789.
The first level puts Mario at the base of a mountain with a fairly simple path to follow to the top. The gimmick is that each time Mario's height position increases, so does a layer of poisonous smog that will quickly deplete Mario's health.
A later level is a sort of diorama with red coins to collect. The gimmick in that level is that with each red coin collected, the level becomes further shattered, making it incredibly difficult to navigate the terrain due to constant collision issues. That level alone is probably responsible for the current 4.8 difficulty rating.
