diff --git a/public/src/js/plugins.js b/public/src/js/plugins.js
index 7dfef2e..604e7a2 100644
--- a/public/src/js/plugins.js
+++ b/public/src/js/plugins.js
@@ -159,6 +159,34 @@ class Plugins{
 		}
 		return input
 	}
+	isObject(input){
+		return input && typeof input === "object" && input.constructor === Object
+	}
+	deepMerge(target, ...sources){
+		sources.forEach(source => {
+			if(this.isObject(target) && this.isObject(source)){
+				for(var i in source){
+					if(this.isObject(source[i])){
+						if(!target[i]){
+							target[i] = {}
+						}
+						this.deepMerge(target[i], source[i])
+					}else if(source[i]){
+						target[i] = source[i]
+					}
+				}
+			}
+		})
+		return target
+	}
+	arrayDel(array, item){
+		var index = array.indexOf(item)
+		if(index !== -1){
+			array.splice(index, 1)
+			return true
+		}
+		return false
+	}
 	
 	hasSettings(){
 		for(var i = 0; i < this.allPlugins.length; i++){
@@ -499,14 +527,32 @@ class EditFunction extends EditValue{
 
 class Patch{
 	edits = []
+	addedLanguages = []
 	addEdits(...args){
 		args.forEach(arg => this.edits.push(arg))
 	}
+	addLanguage(lang, forceSet, fallback="en"){
+		if(fallback){
+			lang = plugins.deepMerge({}, allStrings[fallback], lang)
+		}
+		this.addedLanguages.push({
+			lang: lang,
+			forceSet: forceSet
+		})
+	}
 	beforeStart(){
 		this.edits.forEach(edit => edit.start())
+		this.addedLanguages.forEach(obj => {
+			settings.addLang(obj.lang, obj.forceSet)
+		})
 	}
 	beforeStop(){
-		this.edits.forEach(edit => edit.stop())
+		for(var i = this.edits.length; i--;){
+			this.edits[i].stop()
+		}
+		for(var i = this.addedLanguages.length; i--;){
+			settings.removeLang(this.addedLanguages[i].lang)
+		}
 	}
 	beforeUnload(){
 		this.edits.forEach(edit => edit.unload())
diff --git a/public/src/js/settings.js b/public/src/js/settings.js
index dc6e5b9..e9c9f2d 100644
--- a/public/src/js/settings.js
+++ b/public/src/js/settings.js
@@ -159,6 +159,58 @@ class Settings{
 			pageEvents.send("language-change", lang.id)
 		}
 	}
+	addLang(lang, forceSet){
+		allStrings[lang.id] = lang
+		if(lang.categories){
+			assets.categories.forEach(category => {
+				if("title_lang" in category && lang.categories[category.title_lang.en]){
+					category.title_lang[lang.id] = lang.categories[category.title_lang.en]
+				}
+			})
+		}
+		languageList.push(lang.id)
+		this.allLanguages.push(lang.id)
+		this.items.language.default = this.getLang()
+		if(forceSet){
+			this.storage.language = lang.id
+		}else{
+			try{
+				this.storage.language = localStorage.getItem("lang")
+			}catch(e){}
+			if(this.items.language.options.indexOf(this.storage.language) === -1){
+				this.storage.language = null
+			}
+		}
+		if(settings.getItem("language") === lang.id){
+			settings.setLang(lang)
+		}
+	}
+	removeLang(lang){
+		delete allStrings[lang.id]
+		assets.categories.forEach(category => {
+			if("title_lang" in category){
+				delete category.title_lang[lang.id]
+			}
+		})
+		var index = languageList.indexOf(lang.id)
+		if(index !== -1){
+			languageList.splice(index, 1)
+		}
+		var index = this.allLanguages.indexOf(lang.id)
+		if(index !== -1){
+			this.allLanguages.splice(index, 1)
+		}
+		this.items.language.default = this.getLang()
+		try{
+			this.storage.language = localStorage.getItem("lang")
+		}catch(e){}
+		if(this.items.language.options.indexOf(this.storage.language) === -1){
+			this.storage.language = null
+		}
+		if(lang.id === strings.id){
+			settings.setLang(allStrings[this.getItem("language")])
+		}
+	}
 }
 
 class SettingsView{
@@ -204,6 +256,10 @@ class SettingsView{
 			}
 		}, this.windowSymbol)
 		
+		if(this.customSettings){
+			pageEvents.add(window, "language-change", event => this.setLang(), this.windowSymbol)
+		}
+		
 		var gamepadEnabled = false
 		if("getGamepads" in navigator){
 			var gamepads = navigator.getGamepads()
@@ -441,7 +497,11 @@ class SettingsView{
 			this.mode = "latency"
 			this.latencySet()
 		}
-		pageEvents.send("settings")
+		if(this.customSettings){
+			pageEvents.send("plugins")
+		}else{
+			pageEvents.send("settings")
+		}
 	}
 	getElement(name){
 		return loader.screen.getElementsByClassName(name)[0]
@@ -1014,7 +1074,9 @@ class SettingsView{
 		return title
 	}
 	setLang(lang){
-		settings.setLang(lang)
+		if(lang){
+			settings.setLang(lang)
+		}
 		if(failedTests.length !== 0){
 			showUnsupported(strings)
 		}
@@ -1098,6 +1160,9 @@ class SettingsView{
 		this.gamepad.clean()
 		assets.sounds["bgm_settings"].stop()
 		pageEvents.remove(window, ["mouseup", "touchstart", "touchmove", "touchend", "blur"], this.windowSymbol)
+		if(this.customSettings){
+			pageEvents.remove(window, "language-change", this.windowSymbol)
+		}
 		for(var i in this.items){
 			this.removeTouchEnd(this.items[i].settingBox)
 		}