diff --git a/experiment.t b/experiment.t
index 06930fb..d1378bf 100644
--- a/experiment.t
+++ b/experiment.t
@@ -19,6 +19,10 @@ versionInfo: GameID
 
 gameMain: GameMainDef
   initialPlayerChar = me
+
+  experimentNumber = nil
+  dayNumber = nil
+
   showIntro () {
 
     experimentNumber = rand(100);