An insane level is any level which requires the use of advanced coding to solve, including Data Resetting, the Multiple Tank Glitch, or other versions of the above. The first insane level ever created was David Stolp's the most insane level ever!, which today is very long for an insane level, and is often known as one of the hardest levels ever to exist.

However, there is at least one case of a level that is defined as insane by its title, but does not require the use of any advanced coding (MikeLrejects.dat level 341), but such levels are nevertheless extremely difficult.

List of known insane levels

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