diff -r 219c2e588874 -r b2cc4e4e380c share/hedgewars/Data/Scripts/Multiplayer/Space_Invasion.lua
--- a/share/hedgewars/Data/Scripts/Multiplayer/Space_Invasion.lua	Wed Sep 05 20:09:32 2018 +0200
+++ b/share/hedgewars/Data/Scripts/Multiplayer/Space_Invasion.lua	Thu Oct 04 21:17:21 2018 +0200
@@ -1091,10 +1091,12 @@
 end
 
 function onGameStart()
-	SendGameResultOff()
-	SendRankingStatsOff()
-	SendAchievementsStatsOff()
-	SendHealthStatsOff()
+	if ClansCount >= 2 then
+		SendGameResultOff()
+		SendRankingStatsOff()
+		SendAchievementsStatsOff()
+		SendHealthStatsOff()
+	end
 
 	ShowMission	(
 				loc("SPACE INVASION"),