diff --git a/src/map_builders/mod.rs b/src/map_builders/mod.rs
index 44b9585..e1597d8 100644
--- a/src/map_builders/mod.rs
+++ b/src/map_builders/mod.rs
@@ -5,6 +5,7 @@ mod common;
 mod dla;
 mod drunkard;
 mod maze;
+mod prefab_builder;
 mod simple_map;
 mod voronoi;
 mod waveform_collapse;
diff --git a/src/map_builders/prefab_builder.rs b/src/map_builders/prefab_builder.rs
new file mode 100644
index 0000000..1355fdf
--- /dev/null
+++ b/src/map_builders/prefab_builder.rs
@@ -0,0 +1,65 @@
+use super::{remove_unreachable_areas_returning_most_distant, MapBuilder};
+use crate::{spawner, Map, Position, TileType, SHOW_MAPGEN_VISUALIZER};
+use rltk::RandomNumberGenerator;
+use specs::prelude::*;
+
+#[derive(PartialEq, Clone)]
+#[allow(dead_code)]
+pub enum PrefabMode {
+    RexLevel { template: &'static str },
+}
+
+pub struct PrefabBuilder {
+    map: Map,
+    starting_position: Position,
+    depth: i32,
+    history: Vec<Map>,
+    mode: PrefabMode,
+}
+
+impl MapBuilder for PrefabBuilder {
+    fn get_map(&self) -> Map {
+        self.map.clone()
+    }
+
+    fn get_starting_position(&self) -> Position {
+        self.starting_position
+    }
+
+    fn get_snapshot_history(&self) -> Vec<Map> {
+        self.history.clone()
+    }
+
+    fn build_map(&mut self) {
+        self.build();
+    }
+
+    fn spawn_entities(&mut self, ecs: &mut World) {}
+
+    fn take_snapshot(&mut self) {
+        if SHOW_MAPGEN_VISUALIZER {
+            let mut snapshot = self.map.clone();
+            for v in snapshot.revealed_tiles.iter_mut() {
+                *v = true;
+            }
+            self.history.push(snapshot);
+        }
+    }
+}
+
+impl PrefabBuilder {
+    #[allow(dead_code)]
+    pub fn new(new_depth: i32) -> PrefabBuilder {
+        PrefabBuilder {
+            map: Map::new(new_depth),
+            starting_position: Position { x: 0, y: 0 },
+            depth: new_depth,
+            history: Vec::new(),
+            mode: PrefabMode::RexLevel {
+                template: "../resources/wfc-demo1.xp",
+            },
+        }
+    }
+
+    fn build(&mut self) {}
+}