Index: binaries/data/mods/public/gui/lobby/lobby.js
===================================================================
--- binaries/data/mods/public/gui/lobby/lobby.js
+++ binaries/data/mods/public/gui/lobby/lobby.js
@@ -632,7 +632,16 @@
 		g_SelectedGamePort = g_GameList[gamesBox.selected].port;
 	}
 
-	g_GameList = Engine.GetGameList().filter(game => !filterGame(game)).sort((a, b) => {
+	g_GameList = Engine.GetGameList().map(game => {
+
+		game.observerNumbers = 0;
+		for (let player of stringifiedTeamListToPlayerData(game.players))
+			if (player.Team == "observer")
+				++game.observerNumbers;
+
+		return game;
+
+		}).filter(game => !filterGame(game)).sort((a, b) => {
 		let sortA, sortB;
 		switch (sortBy)
 		{
@@ -683,7 +692,7 @@
 		list_mapName.push(translateMapTitle(game.niceMapName));
 		list_mapSize.push(translateMapSize(game.mapSize));
 		list_mapType.push(g_MapTypes.Title[mapTypeIdx] || "");
-		list_nPlayers.push(game.nbp + "/" + game.maxnbp);
+		list_nPlayers.push(game.nbp + '/' + game.maxnbp + (game.observerNumbers > 0 ? '[color="0 128 128 128"]+' + game.observerNumbers + '[/color]' : '' ));
 		list.push(gameName);
 		list_data.push(i);
 	}