diff --git a/Plague.g1a b/Plague.g1a
index 64e69ef..12fbb36 100644
Binary files a/Plague.g1a and b/Plague.g1a differ
diff --git a/src/core.h b/src/core.h
index c2b419a..cd9427a 100644
--- a/src/core.h
+++ b/src/core.h
@@ -3,6 +3,8 @@
 
 #include <gint/defs/types.h>
 
+
+
 // Duration for internal clock (ms)
 #define ENGINE_TICK 50
 #define CURSOR_TICK 150
@@ -46,6 +48,9 @@ struct game
     // Time
     int time, total_time;
 
+    // Planes
+    struct plane *planes[NB_PLANES + 1];
+
     // Grid for epidemologic model
     struct grid grid;
 };