diff --git a/src/structs.h b/src/structs.h
index 0326d24..50843e8 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -24,6 +24,7 @@ typedef struct Quadtree Quadtree;
 typedef struct Entity Entity;
 typedef struct Objective Objective;
 typedef struct Trigger Trigger;
+typedef struct Marker Marker;
 
 typedef struct {
 	int debug;
@@ -169,6 +170,13 @@ typedef struct {
 	long timePlayed;
 } Game;
 
+struct Marker {
+	int sprite;
+	float value;
+	float y;
+	Marker *next;
+};
+
 typedef struct {
 	int data[MAP_WIDTH][MAP_HEIGHT];
 	int decal[MAP_WIDTH][MAP_HEIGHT];