Index: binaries/data/mods/public/gui/options/options.json
===================================================================
--- binaries/data/mods/public/gui/options/options.json
+++ binaries/data/mods/public/gui/options/options.json
@@ -5,20 +5,20 @@
 		[
 			{
 				"type": "string",
-				"label": "Playername (Single Player)",
-				"tooltip": "How you want to be addressed in Single Player matches.",
+				"label": "Playername (single-player)",
+				"tooltip": "How you want to be addressed in single-player matches.",
 				"config": "playername.singleplayer"
 			},
 			{
 				"type": "string",
-				"label": "Playername (Multiplayer)",
-				"tooltip": "How you want to be addressed in Multiplayer matches (except lobby).",
+				"label": "Playername (multiplayer)",
+				"tooltip": "How you want to be addressed in multiplayer matches (except lobby).",
 				"config": "playername.multiplayer"
 			},
 			{
 				"type": "boolean",
 				"label": "Background Pause",
-				"tooltip": "Pause single player games when window loses focus.",
+				"tooltip": "Pause single-player games when window loses focus.",
 				"config": "pauseonfocusloss"
 			},
 			{
Index: binaries/data/mods/public/gui/pregame/MainMenuItems.js
===================================================================
--- binaries/data/mods/public/gui/pregame/MainMenuItems.js
+++ binaries/data/mods/public/gui/pregame/MainMenuItems.js
@@ -46,8 +46,8 @@
 		]
 	},
 	{
-		"caption": translate("Single Player"),
-		"tooltip": translate("Click here to start a new single player game."),
+		"caption": translate("Single-player"),
+		"tooltip": translate("Click here to start a new single-player game."),
 		"submenu": [
 			{
 				"caption": translate("Matches"),
Index: binaries/data/mods/public/gui/replaymenu/replay_filters.js
===================================================================
--- binaries/data/mods/public/gui/replaymenu/replay_filters.js
+++ binaries/data/mods/public/gui/replaymenu/replay_filters.js
@@ -139,7 +139,7 @@
 function initSingleplayerFilter(filters)
 {
 	let singleplayerFilter = Engine.GetGUIObjectByName("singleplayerFilter");
-	singleplayerFilter.list = [translate("Single- and multiplayer"), translate("Single Player"), translate("Multiplayer")];
+	singleplayerFilter.list = [translate("Single- and multiplayer"), translate("Single-player"), translate("Multiplayer")];
 	singleplayerFilter.list_data = ["", "Singleplayer", "Multiplayer"];
 
 	if (filters && filters.singleplayer)
Index: binaries/data/mods/public/gui/session/menu.js
===================================================================
--- binaries/data/mods/public/gui/session/menu.js
+++ binaries/data/mods/public/gui/session/menu.js
@@ -1140,7 +1140,7 @@
  *
  * @param explicit - true if the player explicitly wants to pause or resume.
  * If this argument isn't set, a multiplayer game won't be paused and the pause overlay
- * won't be shown in single player.
+ * won't be shown in single-player.
  */
 function pauseGame(pause = true, explicit = false)
 {