Index: binaries/data/mods/public/gui/common/functions_utility.js
===================================================================
--- binaries/data/mods/public/gui/common/functions_utility.js
+++ binaries/data/mods/public/gui/common/functions_utility.js
@@ -3,6 +3,14 @@
  */
 var g_LastNickNotification = -1;
 
+/**
+ * Used to track autocompleted names to try next autocompletion if found multiples
+ */
+var g_LastAutoCompleteBufferPosition = 0;
+var g_LastAutoCompleteText = "";
+var g_SameAutoCompleteTries = 0;
+var g_LastAutoCompleteNewText = "";
+
 // Get list of XML files in pathname with recursion, excepting those starting with _
 function getXMLFileList(pathname)
 {
@@ -140,7 +148,7 @@
 	return Engine.ConfigDB_GetValue("user", "playername.multiplayer") || Engine.GetSystemUsername();
 }
 
-function tryAutoComplete(text, autoCompleteList)
+function tryAutoComplete(text, autoCompleteList, tries)
 {
 	if (!text.length)
 		return text;
@@ -153,19 +161,35 @@
 	if (!lastWord.length)
 		return text;
 
+	let firstFound = "";
 	for (var word of autoCompleteList)
 	{
 		if (word.toLowerCase().indexOf(lastWord.toLowerCase()) != 0)
 			continue;
+		else
+		{
+			--tries;
+			if (firstFound == "")
+				firstFound = word;
+		}
+		if (tries < 0) break;
+	}
 
-		text = wordSplit.join(" ");
-		if (text.length > 0)
-			text += " ";
+	if (firstFound == "")
+		return text;
 
-		text += word;
-		break;
+	// wrap search to start, cause tries could not complete to 0, means there are no more matches as tries in list
+	if (tries >= 0)
+	{
+		g_SameAutoCompleteTries = 1;
+		word = firstFound;
 	}
-	return text;
+	
+	text = wordSplit.join(" ");
+	if (text.length > 0)
+		text += " ";
+
+	return text + word;
 }
 
 function autoCompleteNick(guiObject, playernames)
@@ -175,11 +199,23 @@
 		return;
 
 	let bufferPosition = guiObject.buffer_position;
-	let textTillBufferPosition = text.substring(0, bufferPosition);
-	let newText = tryAutoComplete(textTillBufferPosition, playernames);
-
-	guiObject.caption = newText + text.substring(bufferPosition);
-	guiObject.buffer_position = bufferPosition + (newText.length - textTillBufferPosition.length);
+	let sameTry = g_LastAutoCompleteNewText == text;
+	if (!sameTry)
+	{
+		g_LastAutoCompleteBufferPosition = bufferPosition;
+		g_LastAutoCompleteText = text;
+		g_LastAutoCompleteNewText = "";
+		g_SameAutoCompleteTries = 0;
+	}
+	
+	let textTillBufferPosition = sameTry ? g_LastAutoCompleteText.substring(0, g_LastAutoCompleteBufferPosition) : text.substring(0, bufferPosition);
+	let newText = tryAutoComplete(textTillBufferPosition, playernames, g_SameAutoCompleteTries++);
+
+	guiObject.caption = newText + (sameTry ? g_LastAutoCompleteText.substring(g_LastAutoCompleteBufferPosition) : text.substring(bufferPosition));
+	if (g_LastAutoCompleteNewText == "" || sameTry)
+		g_LastAutoCompleteNewText = guiObject.caption;
+	guiObject.buffer_position = (sameTry ? g_LastAutoCompleteBufferPosition : bufferPosition) + (newText.length - textTillBufferPosition.length);
+	return;
 }
 
 function clearChatMessages()