Devtest4 is a map in Unturned 3. It is a development test map made to showcase new landscaping features with the use of the devkit tool.
The map is constructed with tiles, and is not square in overall shape unlike other maps. Several spots have holes going through the ground, but natural terrain is still above unlike other maps that instead use objects to replicate the ground.
The map primarily uses materials from Russia, but each tile can have up to eight unique materials. Previously, there was a global limit of eight materials per map.