diff -r 6c66b594b780 -r 91cc6aef818c share/hedgewars/Data/Scripts/Multiplayer/TechRacer.lua
--- a/share/hedgewars/Data/Scripts/Multiplayer/TechRacer.lua	Tue Jul 14 03:45:27 2015 +0200
+++ b/share/hedgewars/Data/Scripts/Multiplayer/TechRacer.lua	Tue Jul 14 20:01:15 2015 +0900
@@ -691,6 +691,10 @@
 
 function onGameInit()
 
+		if mapID == nil then
+			mapID = 2 + GetRandom(7)
+		end
+
 		Theme = "Cave"
 
 		MapGen = mgDrawn