NY00123's tests level

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NY00123's tests level
NY00123's tests level.png
Mod-ingame-NY00123's tests level.png
Modded episodeKeen 4
ProtagonistCommander Keen
Release date
Number of levels1
Secret levels0
New gameplay?Yes
New graphics?Some
New levels?Yes
New sounds?No
New music?No
(0 votes)

NY00123's tests level is a one level Keen 4 mod by NY00123. It was build in a way to be a challenging game of skill. It is inspired by various levels of a similar nature, constructed for Jazz Jackrabbit 2 in 2007 or earlier.


The single level consists of a few so-called "tests". In each such a test, one basically needs to go from A to B, without touching any of the green-colored "warp" tiles. Touching any of these will warp the player back to point A. It is possible to pass all of the tests.

Technical Information

The "door" tile property was morphed into the new "warp" tile property. Besides that, gem holders were effectively disabled, freeing up code space for the new warping functionality. A few other tile properties got morphed into the winds.

Information used for the patching where partly taken from a couple of disassemblies of Keen 4, from small segments of the Omnispeak sources and the.

In-Game Screenshots

See also

KeenRush's Fall Up mod, which makes use of a quite similar approach.