diff --git a/dev-assets/doodads/buttons/sticky.js b/dev-assets/doodads/buttons/sticky.js
index a715a59..1702f8c 100644
--- a/dev-assets/doodads/buttons/sticky.js
+++ b/dev-assets/doodads/buttons/sticky.js
@@ -2,7 +2,7 @@ function main() {
 	var pressed = false;
 
 	// When a sticky button receives power, it pops back up.
-	Message.Subscribe("power", function(powered) {
+	Message.Subscribe("power", function (powered) {
 		if (powered && pressed) {
 			Self.ShowLayer(0);
 			pressed = false;
@@ -12,7 +12,7 @@ function main() {
 		}
 	})
 
-	Events.OnCollide(function(e) {
+	Events.OnCollide(function (e) {
 		if (!e.Settled) {
 			return;
 		}
diff --git a/dev-assets/doodads/objects/Makefile b/dev-assets/doodads/objects/Makefile
index 86e33ce..e79ee47 100644
--- a/dev-assets/doodads/objects/Makefile
+++ b/dev-assets/doodads/objects/Makefile
@@ -10,6 +10,11 @@ build:
 	doodad convert -t "Exit Flag" exit-flag.png exit-flag.doodad
 	doodad install-script exit-flag.js exit-flag.doodad
 
+	# Checkpoint Flag
+	doodad convert -t "Checkpoint Flag" checkpoint-active.png \
+		checkpoint-inactive.png checkpoint-flag.doodad
+	doodad install-script checkpoint-flag.js checkpoint-flag.doodad
+
 	# Anvil
 	doodad convert -t "Anvil" anvil.png anvil.doodad
 	doodad install-script anvil.js anvil.doodad
diff --git a/dev-assets/doodads/objects/checkpoint-active.png b/dev-assets/doodads/objects/checkpoint-active.png
new file mode 100644
index 0000000..d8d9503
Binary files /dev/null and b/dev-assets/doodads/objects/checkpoint-active.png differ
diff --git a/dev-assets/doodads/objects/checkpoint-flag.js b/dev-assets/doodads/objects/checkpoint-flag.js
new file mode 100644
index 0000000..a50608a
--- /dev/null
+++ b/dev-assets/doodads/objects/checkpoint-flag.js
@@ -0,0 +1,38 @@
+// Checkpoint Flag.
+var isCurrentCheckpoint = false;
+
+function main() {
+    Self.SetHitbox(22 + 16, 16, 75 - 16, 86);
+    setActive(false);
+
+    // Checkpoints broadcast to all of their peers so they all
+    // know which one is the most recently activated.
+    Message.Subscribe("broadcast:checkpoint", function (currentID) {
+        setActive(false);
+    });
+
+    Events.OnCollide(function (e) {
+        if (!e.Settled) {
+            return;
+        }
+
+        // Only care about the player character.
+        if (!e.Actor.IsPlayer()) {
+            return;
+        }
+
+        // Set the player checkpoint.
+        SetCheckpoint(Self.Position());
+        setActive(true);
+        Message.Broadcast("broadcast:checkpoint", Self.ID())
+    });
+}
+
+function setActive(v) {
+    if (v && !isCurrentCheckpoint) {
+        Flash("Checkpoint!");
+    }
+
+    isCurrentCheckpoint = v;
+    Self.ShowLayerNamed(v ? "checkpoint-active" : "checkpoint-inactive");
+}
\ No newline at end of file
diff --git a/dev-assets/doodads/objects/checkpoint-inactive.png b/dev-assets/doodads/objects/checkpoint-inactive.png
new file mode 100644
index 0000000..6781ff9
Binary files /dev/null and b/dev-assets/doodads/objects/checkpoint-inactive.png differ