A Kaizo Hack is a hack that has as a main purpose to be fun to play, while pushing SMW to the limits of human capabilities by using clever level design. They mostly don't have a difficulty curve, but that is not always the case. The word kaizo comes from Kaizo Mario World.
Kaizo hacks are mostly seen as bad (as in graphical glitches, bad palettes, cutoff, floating munchers, etc.) hard hacks. However, that is not true. There are a lot of quality kaizo hacks out there. For example, take Cool or Cruel (C|C in short). This hack is unique and has good level design, and very creative traps. Also notable is that some people think kaizo is full of kaizo traps(see below). That, however, is also not true.
Excessively hard hacks, that go very far beyond human skills, into inhuman skills, are called pit hacks. Those hacks are made only to push the difficulty in mario to its limits. These contain no traps, only frame-perfect tricks and glitches.
Once per year, Ultimaximus runs a kaizo contest. This contest has two different categories: Creative and Difficult. Creative aims for creative traps and levels, while difficulty matters less. Difficulty aims for very difficult levels(but not excessively), while creativity matters less.
A Kaizo Trap is any trap that was either used in Kaizo Mario World, or a variation on one of its traps.
Now, it more commonly refers to any trap that is meant to annoy the player. These include, but are not limited to:
- Placement of an invisible coin block or music note block near a pit with the intention of making the player fall to his or her death. This is very common.
- Placement of invisible coin blocks to trap the player in an inescapable area, especially after luring the player with something like a 1-up mushroom.
- A pit after the goal point which requires a P-switch or a certain status to avoid death, namely one that is out of sight from the initial crossing point.
- A pipe or a door leading to a death room.
- Placement of Floating Munchers. This is very common in Kaizo hacks.
On 10/19/2010 10:06:00 Hawaiian Time Sharp, user 6892, mockingod, created a thread. This thread was a proposal for a Kaizo Hack Section, in which people would be able to submit their work of Kaizo to the site. Now this was not just any Kaizo proposal. This proposal was serious, not one that was asking, "Why isn't there a Kaizo section???". In the end, SNN said that He and Kieran were talking about this, and they said that it would come, but would not come for a while.
After a time span of about 8 and a half days, the Kaizo Hack SubForum located in the Hack Discussion section was born. Link to the thread.
<Blumiere> snn said he made it directly after kieran said we had enough forums as it is