diff --git a/custom_levels/jak2/test-zone/test-zone.jsonc b/custom_levels/jak2/test-zone/test-zone.jsonc
new file mode 100644
index 0000000000..c2278aa0db
--- /dev/null
+++ b/custom_levels/jak2/test-zone/test-zone.jsonc
@@ -0,0 +1,83 @@
+{
+  // The "in-game" name of the level. Should be lower case, with dashes (GOAL symbol name)
+  // the name of this file, and the folder this file is in must have the same name.
+  "long_name": "test-zone",
+  // The file name, should be upper case and 8 characters or less.
+  "iso_name": "TESTZONE",
+  // The nickname, should be exactly 3 characters
+  "nickname": "tsz", // 3 char name, all lowercase
+  // Background mesh file.
+  // Must have vertex colors. Use the blender cycles renderer, bake, diffuse, uncheck color,
+  // and bake to vertex colors. For now, only the first vertex color group is used, so make sure you
+  // only have 1.
+  "gltf_file": "custom_levels/jak2/test-zone/test-zone2.glb",
+
+  // automatically set wall vs. ground based on angle. Useful if you don't want to assign this yourself
+  "automatic_wall_detection": true,
+  "automatic_wall_angle": 45.0,
+
+  // if your mesh has triangles with incorrect orientation, set this to make all collision mesh triangles double sided
+  // this makes collision 2x slower and bigger, so only use if really needed
+  "double_sided_collide": false,
+
+  // available res-lump tag data types:
+  // int32, float, meters, vector, vector4m (meters)
+  //
+  // examples:
+  //
+  // adds a float tag 'spring-height' with value of 200 meters (1 meter = 4096.0 units):
+  // "spring-height": ["meters", 200.0]
+  //
+  // adds a vector tag 'movie-pos':
+  // "movie-pos": ["vector", [4096000.0, -176128.0, 1353973.76, 1.0]]
+
+   // The base actor id for your custom level. If you have multiple levels, this should be unique!
+   "base_id": 100,
+
+  // All art groups you want to use in your custom level. Will add their models and corresponding textures to the FR3 file.
+  "art_groups": ["prsn-torture-ag"],
+
+   // Any textures you want to include in your custom level.
+   // This is mainly useful for textures which are not in the common level files and have no art group associated with them.
+   // To get a list of all the textures, you can extract all of the game's textures
+   // by setting "save_texture_pngs" to true in the decompiler config.
+   "textures": [],
+
+  "actors" : [
+    {
+      "trans": [-15.2818, 15.2461, 17.1360], // translation
+      "etype": "crate",  // actor type
+      "game_task": 0, // associated game task (for powercells, etc)
+      "kill_mask": 0,
+      "quat": [0, 0, 0, 1], // quaternion
+      "bsphere": [-15.2818, 15.2461, 17.1360, 10], // bounding sphere
+      "lump": {
+        "name": "test-crate",
+        "eco-info": ["int32", 18, 2]
+      }
+    },
+
+    {
+      "trans": [-5.4630, 17.4553, 1.6169], // translation
+      "etype": "eco-yellow",  // actor type
+      "game_task": 0, // associated game task (for powercells, etc)
+      "kill_mask": 0,
+      "quat": [0, 0, 0, 1], // quaternion
+      "bsphere": [-5.4630, 17.4553, 1.6169, 10], // bounding sphere
+      "lump": {
+        "name": "test-eco"
+      }
+    },
+
+    {
+      "trans": [-7.41, 13.5, 28.42], // translation
+      "etype": "prsn-torture",  // actor type
+      "game_task": 0, // associated game task (for powercells, etc)
+      "quat": [0, 0, 0, 1], // quaternion
+      "bsphere": [-7.41, 13.5, 28.42, 10], // bounding sphere
+      "lump": {
+        "name": "test-torture"
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/custom_levels/jak2/test-zone/test-zone2.glb b/custom_levels/jak2/test-zone/test-zone2.glb
new file mode 100644
index 0000000000..2df7f4d595
Binary files /dev/null and b/custom_levels/jak2/test-zone/test-zone2.glb differ
diff --git a/custom_levels/jak2/test-zone/testzone.gd b/custom_levels/jak2/test-zone/testzone.gd
new file mode 100644
index 0000000000..1aaf42635f
--- /dev/null
+++ b/custom_levels/jak2/test-zone/testzone.gd
@@ -0,0 +1,8 @@
+;; DGO definition file for Awful Village level
+;; We use the convention of having a longer DGO name for levels without precomputed visibility.
+
+;; the actual file name still needs to be 8.3
+("TSZ.DGO"
+ ("test-zone.go"
+  "prison-obs.o"
+  ))
\ No newline at end of file
diff --git a/goal_src/jak2/engine/level/level-info.gc b/goal_src/jak2/engine/level/level-info.gc
index bfc9737d74..5d052cfc4f 100644
--- a/goal_src/jak2/engine/level/level-info.gc
+++ b/goal_src/jak2/engine/level/level-info.gc
@@ -14690,7 +14690,7 @@
   0
   )
 
-;; added in PC port: test levels from the ps3 version
+;; og:preserve-this added in PC port: test levels from the ps3 version
 (#when USE_PS3_LEVELS
   (define 4aaron (new 'static 'level-load-info
                           :index 1
@@ -15724,3 +15724,88 @@
   (cons! *level-load-list* 'wasall)
   (cons! *level-load-list* 'stadocc)
   )
+
+;; og:preserve-this added test-zone level
+(define test-zone
+  (new 'static 'level-load-info
+    :index #x9e
+    :name 'test-zone
+    :visname 'test-zone-vis
+    :nickname 'tsz
+    :dbname 'test-zone
+    :taskname 'default
+    :packages '()
+    ;; :memory-mode (load-buffer-mode small-center)
+    :music-bank #f
+    :ambient-sounds '()
+    :mood-func 'update-mood-default
+    :mood-init #f
+    :ocean #f
+    :sky #t
+    :use-camera-other #f
+    :part-engine-max 16
+    :continues '((new 'static 'continue-point
+        :name "test-zone-start"
+        :level 'test-zone
+        :trans (new 'static 'vector :x 0.0 :y (meters 10) :z (meters 10) :w 1.0)
+        :quat (new 'static 'vector :y 0.061 :w 0.9981)
+        :camera-trans (new 'static 'vector :x 0.0 :y (meters 1) :z 0.0 :w 1.0)
+        :camera-rot (new 'static 'inline-array vector3s 3
+          (new 'static 'vector3s :data (new 'static 'array float 3 1.0 0.0 0.0))
+          (new 'static 'vector3s :data (new 'static 'array float 3 0.0 1.0 0.0))
+          (new 'static 'vector3s :data (new 'static 'array float 3 0.0 0.0 1.0))
+          )
+        :on-goto #f
+        :vis-nick #f
+        :want (new 'static 'inline-array level-buffer-state 6
+          (new 'static 'level-buffer-state :name 'test-zone :display? 'display :force-vis? #f :force-inside? #f)
+          (new 'static 'level-buffer-state :name 'ctywide :display? 'display :force-vis? #f :force-inside? #f)
+          (new 'static 'level-buffer-state :name #f :display? #f :force-vis? #f :force-inside? #f)
+          (new 'static 'level-buffer-state :name #f :display? #f :force-vis? #f :force-inside? #f)
+          (new 'static 'level-buffer-state :name #f :display? #f :force-vis? #f :force-inside? #f)
+          (new 'static 'level-buffer-state :name #f :display? #f :force-vis? #f :force-inside? #f)
+          )
+        :want-sound (new 'static 'array symbol 3 #f #f #f)
+        )
+      )
+    :tasks '()
+    :priority 100
+    :load-commands '()
+    :alt-load-commands '()
+    :bsp-mask #xffffffffffffffff
+    :buttom-height (meters -10000000)
+    :run-packages '()
+    :wait-for-load #t
+    :login-func #f
+    :activate-func #f
+    :deactivate-func #f
+    :kill-func #f
+    :borrow-level (new 'static 'array symbol 2 #f #f)
+    :borrow-display? (new 'static 'array symbol 2 #f #f)
+    :base-task-mask (task-mask task0)
+    :texture-anim-tfrag #f
+    :texture-anim-pris #f
+    :texture-anim-shrub #f
+    :texture-anim-alpha #f
+    :texture-anim-water #f
+    :texture-anim-twarp #f
+    :texture-anim-pris2 #f
+    :texture-anim-sprite #f
+    :texture-anim-map #f
+    :texture-anim-sky #f
+    :draw-priority 10.0
+    :fog-height 327680.0
+    :bigmap-id (bigmap-id bigmap-id-20)
+    :ocean-near-translucent? #t
+    :ocean-far? #t
+    :mood-range (new 'static 'mood-range :data (new 'static 'array float 4 0.0 1.0 0.0 1.0))
+    :max-rain 1.0
+    :fog-mult 1.0
+    :ocean-alpha 1.0
+    :extra-sound-bank #f
+    )
+  )
+
+(#when PC_PORT
+  (cons! *level-load-list* 'test-zone)
+  )
diff --git a/goal_src/jak2/game.gp b/goal_src/jak2/game.gp
index fef36ee837..29f3973ffc 100644
--- a/goal_src/jak2/game.gp
+++ b/goal_src/jak2/game.gp
@@ -291,6 +291,17 @@
   (cgo-file "wasall.gd" common-dep)
   )
 
+;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Example Custom Level
+;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; Set up the build system to build the level geometry
+;; this path is relative to the custom_levels/jak2 folder
+;; it should point to the .jsonc file that specifies the level.
+(build-custom-level "test-zone")
+;; the DGO file
+(custom-level-cgo "TSZ.DGO" "test-zone/testzone.gd")
+
 ;;;;;;;;;;;;;;;;;;;;;
 ;; ANIMATIONS
 ;;;;;;;;;;;;;;;;;;;;;
diff --git a/goal_src/jak2/lib/project-lib.gp b/goal_src/jak2/lib/project-lib.gp
index 7596a61318..1ace9a754e 100644
--- a/goal_src/jak2/lib/project-lib.gp
+++ b/goal_src/jak2/lib/project-lib.gp
@@ -83,6 +83,17 @@
     )
   )
 
+(defun custom-level-cgo (output-name desc-file-name)
+  "Add a CGO with the given output name (in $OUT/iso) and input name (in custom_levels/jak2/)"
+  (let ((out-name (string-append "$OUT/iso/" output-name)))
+    (defstep :in (string-append "custom_levels/jak2/" desc-file-name)
+      :tool 'dgo
+      :out `(,out-name)
+      )
+    (set! *all-cgos* (cons out-name *all-cgos*))
+    )
+  )
+
 (defun cgo (output-name desc-file-name)
   "Add a CGO with the given output name (in $OUT/iso) and input name (in goal_src/jak2/dgos)"
   (let ((out-name (string-append "$OUT/iso/" output-name)))
@@ -124,6 +135,12 @@
     )
   )
 
+(defmacro build-custom-level (name)
+  (let* ((path (string-append "custom_levels/jak2/" name "/" name ".jsonc")))
+    `(defstep :in ,path
+              :tool 'build-level2
+              :out '(,(string-append "$OUT/obj/" name ".go")))))
+
 (defmacro group (name &rest stuff)
   `(defstep :in ""
      :tool 'group