Test

Not to be confused with TestLevel, a similarly named location.

Test (or known in-game as Testworld) is an unknown location within Pokémon 3D that is only accessible by editing the player.dat document in the Pokémon 3D file. This can be accomplished by editing their current location to be "test.dat". Its purpose seems to be testing communication with other NPCs, ceilings, lighting, and the underwater effect. It has the same background music as Route 29. The player will constantly emit bubbles when they're in this area.

You can see the level in the first seconds of this video by nilllzz: YouTube

Geography

Test is a small, flat grassland with a cobblestone ceiling covering a fourth of the total area. The area appears to be completely submerged underwater.

NPCs

There are 3 NPCs that are in Test, one appears to be Red's sprite, except orange. Another NPC appears to be the same thing, except blue. The last sprite is that of your in-game rival. The game crashes if you attempt to speak to the orange NPC, and the blue one simply has no dialogue. The rival NPC gives you a couple of options, but at the end, he'll always say "Log Out".

Gallery

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  A view of Test with the ceiling and 3 NPCs visible.

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  Attempting to speak to the Blue NPC.

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  The options the Rival NPC gives you. Notice "Nils PC".