diff --git a/core/src/com/unciv/UnCivGame.kt b/core/src/com/unciv/UnCivGame.kt
index cee90552..98dfcba9 100644
--- a/core/src/com/unciv/UnCivGame.kt
+++ b/core/src/com/unciv/UnCivGame.kt
@@ -50,7 +50,7 @@ class UnCivGame(val version: String) : Game() {
     }
 
     fun loadGame(gameName:String){
-        loadGame(GameSaver().loadGame(gameName))
+        loadGame(GameSaver().loadGameByName(gameName))
     }
 
     fun startNewGame() {
diff --git a/core/src/com/unciv/logic/GameInfo.kt b/core/src/com/unciv/logic/GameInfo.kt
index 1689cd38..0f30deb0 100644
--- a/core/src/com/unciv/logic/GameInfo.kt
+++ b/core/src/com/unciv/logic/GameInfo.kt
@@ -28,6 +28,7 @@ class GameInfo {
     var turns = 0
     var oneMoreTurnMode=false
     var currentPlayer=""
+    var gameId = UUID.randomUUID().toString() // random string
 
     //region pure functions
     fun clone(): GameInfo {
diff --git a/core/src/com/unciv/logic/GameSaver.kt b/core/src/com/unciv/logic/GameSaver.kt
index 79048317..a616d953 100644
--- a/core/src/com/unciv/logic/GameSaver.kt
+++ b/core/src/com/unciv/logic/GameSaver.kt
@@ -25,12 +25,18 @@ class GameSaver {
         json().toJson(game,getSave(GameName))
     }
 
-    fun loadGame(GameName: String) : GameInfo {
+    fun loadGameByName(GameName: String) : GameInfo {
         val game = json().fromJson(GameInfo::class.java, getSave(GameName))
         game.setTransients()
         return game
     }
 
+    fun gameInfoFromString(gameData:String): GameInfo {
+        val game = json().fromJson(GameInfo::class.java, gameData)
+        game.setTransients()
+        return game
+    }
+
     fun deleteSave(GameName: String){
         getSave(GameName).delete()
     }
diff --git a/core/src/com/unciv/ui/cityscreen/CityScreenCityPickerTable.kt b/core/src/com/unciv/ui/cityscreen/CityScreenCityPickerTable.kt
index 79c4d512..22ef9ce2 100644
--- a/core/src/com/unciv/ui/cityscreen/CityScreenCityPickerTable.kt
+++ b/core/src/com/unciv/ui/cityscreen/CityScreenCityPickerTable.kt
@@ -45,7 +45,7 @@ class CityScreenCityPickerTable(val cityScreen: CityScreen) : Table(){
             val textArea = TextField(city.name, CameraStageBaseScreen.skin)
             textArea.setAlignment(Align.center)
             editCityNamePopup.add(textArea).colspan(2).row()
-            editCityNamePopup.addButton("Close".tr()){editCityNamePopup.close()}
+            editCityNamePopup.addCloseButton()
             editCityNamePopup.addButton("Save".tr()){
                 city.name = textArea.text
                 cityScreen.game.screen = CityScreen(city)
diff --git a/core/src/com/unciv/ui/mapeditor/MapEditorOptionsTable.kt b/core/src/com/unciv/ui/mapeditor/MapEditorOptionsTable.kt
index 41a79061..2b72bf31 100644
--- a/core/src/com/unciv/ui/mapeditor/MapEditorOptionsTable.kt
+++ b/core/src/com/unciv/ui/mapeditor/MapEditorOptionsTable.kt
@@ -72,14 +72,14 @@ class MapEditorOptionsTable(mapEditorScreen: MapEditorScreen): PopupTable(mapEdi
                 remove()
                 val uploadedSuccessfully = PopupTable(screen)
                 uploadedSuccessfully.addGoodSizedLabel("Map uploaded successfully!").row()
-                uploadedSuccessfully.addButton("Close") { uploadedSuccessfully.remove() }
+                uploadedSuccessfully.addCloseButton()
                 uploadedSuccessfully.open()
             }
             catch(ex:Exception){
                 remove()
                 val couldNotUpload = PopupTable(screen)
                 couldNotUpload.addGoodSizedLabel("Could not upload map!").row()
-                couldNotUpload.addButton("Close") { couldNotUpload.remove() }
+                couldNotUpload.addCloseButton()
                 couldNotUpload.open()
             }
         }
@@ -125,7 +125,7 @@ class MapDownloadTable(mapEditorScreen: MapEditorScreen):PopupTable(mapEditorScr
         } catch (ex: Exception) {
             addGoodSizedLabel("Could not get list of maps!").row()
         }
-        addButton("Close") { close() }
+        addCloseButton()
         open()
     }
 }
\ No newline at end of file
diff --git a/core/src/com/unciv/ui/newgamescreen/NewGameScreen.kt b/core/src/com/unciv/ui/newgamescreen/NewGameScreen.kt
index ad06154e..2f26ba76 100644
--- a/core/src/com/unciv/ui/newgamescreen/NewGameScreen.kt
+++ b/core/src/com/unciv/ui/newgamescreen/NewGameScreen.kt
@@ -14,6 +14,7 @@ import com.unciv.ui.utils.disable
 import com.unciv.ui.utils.enable
 import com.unciv.ui.utils.onClick
 import com.unciv.ui.worldscreen.WorldScreen
+import com.unciv.ui.worldscreen.optionstable.OnlineMultiplayer
 import com.unciv.ui.worldscreen.optionstable.PopupTable
 import java.util.*
 import kotlin.concurrent.thread
@@ -37,20 +38,19 @@ class NewGameScreen: PickerScreen(){
             if (newGameParameters.players.none { it.playerType == PlayerType.Human }) {
                 val noHumanPlayersPopup = PopupTable(this)
                 noHumanPlayersPopup.addGoodSizedLabel("No human players selected!").row()
-                noHumanPlayersPopup.addButton("Close") { noHumanPlayersPopup.close() }
+                noHumanPlayersPopup.addCloseButton()
                 noHumanPlayersPopup.open()
                 return@onClick
             }
 
-            if (newGameParameters.isOnlineMultiplayer){
-                for(player in newGameParameters.players.filter{ it.playerType == PlayerType.Human}) {
+            if (newGameParameters.isOnlineMultiplayer) {
+                for (player in newGameParameters.players.filter { it.playerType == PlayerType.Human }) {
                     try {
                         UUID.fromString(player.playerId)
-                    }
-                    catch (ex:Exception) {
+                    } catch (ex: Exception) {
                         val invalidPlayerIdPopup = PopupTable(this)
                         invalidPlayerIdPopup.addGoodSizedLabel("Invalid player ID!").row()
-                        invalidPlayerIdPopup.addButton("Close") { invalidPlayerIdPopup.remove() }
+                        invalidPlayerIdPopup.addCloseButton()
                         invalidPlayerIdPopup.open()
                         return@onClick
                     }
@@ -65,10 +65,21 @@ class NewGameScreen: PickerScreen(){
                 // Creating a new game can take a while and we don't want ANRs
                 try {
                     newGame = GameStarter().startNewGame(newGameParameters)
+                    if (newGameParameters.isOnlineMultiplayer) {
+                        try {
+                            OnlineMultiplayer().tryUploadGame(newGame!!)
+                        } catch (ex: Exception) {
+                            val cantUploadNewGamePopup = PopupTable(this)
+                            cantUploadNewGamePopup.addGoodSizedLabel("Can't upload the new game!")
+                            cantUploadNewGamePopup.addCloseButton()
+                            newGame = null
+                        }
+                    }
                 } catch (exception: Exception) {
                     val cantMakeThatMapPopup = PopupTable(this)
                     cantMakeThatMapPopup.addGoodSizedLabel("It looks like we can't make a map with the parameters you requested!".tr()).row()
                     cantMakeThatMapPopup.addGoodSizedLabel("Maybe you put too many players into too small a map?".tr()).row()
+                    cantMakeThatMapPopup.addCloseButton()
                     cantMakeThatMapPopup.open()
                 }
             }
diff --git a/core/src/com/unciv/ui/saves/LoadGameScreen.kt b/core/src/com/unciv/ui/saves/LoadGameScreen.kt
index 06a49188..346cc2b3 100644
--- a/core/src/com/unciv/ui/saves/LoadGameScreen.kt
+++ b/core/src/com/unciv/ui/saves/LoadGameScreen.kt
@@ -9,7 +9,6 @@ import com.badlogic.gdx.scenes.scene2d.ui.Table
 import com.badlogic.gdx.scenes.scene2d.ui.TextButton
 import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener
 import com.unciv.UnCivGame
-import com.unciv.logic.GameInfo
 import com.unciv.logic.GameSaver
 import com.unciv.models.gamebasics.tr
 import com.unciv.ui.pickerscreens.PickerScreen
@@ -61,8 +60,7 @@ class LoadGameScreen : PickerScreen() {
             try {
                 val clipboardContentsString = Gdx.app.clipboard.contents.trim()
                 val decoded = Gzip.unzip(clipboardContentsString)
-                val loadedGame = GameSaver().json().fromJson(GameInfo::class.java, decoded)
-                loadedGame.setTransients()
+                val loadedGame = GameSaver().gameInfoFromString(decoded)
                 UnCivGame.Current.loadGame(loadedGame)
             } catch (ex: Exception) {
                 errorLabel.setText("Could not load game from clipboard!".tr())
@@ -113,7 +111,7 @@ class LoadGameScreen : PickerScreen() {
                 val savedAt = Date(GameSaver().getSave(save).lastModified())
                 textToSet += "\n{Saved at}: ".tr() + SimpleDateFormat("dd-MM-yy HH.mm").format(savedAt)
                 try {
-                    val game = GameSaver().loadGame(save)
+                    val game = GameSaver().loadGameByName(save)
                     val playerCivNames = game.civilizations.filter { it.isPlayerCivilization() }.joinToString { it.civName.tr() }
                     textToSet += "\n" + playerCivNames +
                             ", " + game.difficulty.tr() + ", {Turn} ".tr() + game.turns
diff --git a/core/src/com/unciv/ui/worldscreen/AlertPopup.kt b/core/src/com/unciv/ui/worldscreen/AlertPopup.kt
index da749812..0c24c049 100644
--- a/core/src/com/unciv/ui/worldscreen/AlertPopup.kt
+++ b/core/src/com/unciv/ui/worldscreen/AlertPopup.kt
@@ -80,7 +80,6 @@ class AlertPopup(val worldScreen: WorldScreen, val popupAlert: PopupAlert): Popu
             AlertType.DemandToStopSettlingCitiesNear -> {
                 val otherciv= worldScreen.gameInfo.getCivilization(popupAlert.value)
                 val playerDiploManager = worldScreen.viewingCiv.getDiplomacyManager(otherciv)
-                val translatedNation = otherciv.getTranslatedNation()
                 addLeaderName(otherciv)
                 addGoodSizedLabel("Please don't settle new cities near us.").row()
                 add(getCloseButton("Very well, we shall look for new lands to settle."){
diff --git a/core/src/com/unciv/ui/worldscreen/WorldScreen.kt b/core/src/com/unciv/ui/worldscreen/WorldScreen.kt
index a5b8dbe0..8c2e8f31 100644
--- a/core/src/com/unciv/ui/worldscreen/WorldScreen.kt
+++ b/core/src/com/unciv/ui/worldscreen/WorldScreen.kt
@@ -26,6 +26,7 @@ import com.unciv.ui.trade.DiplomacyScreen
 import com.unciv.ui.utils.*
 import com.unciv.ui.worldscreen.bottombar.BattleTable
 import com.unciv.ui.worldscreen.bottombar.WorldScreenBottomBar
+import com.unciv.ui.worldscreen.optionstable.OnlineMultiplayer
 import com.unciv.ui.worldscreen.optionstable.PopupTable
 import com.unciv.ui.worldscreen.unit.UnitActionsTable
 import kotlin.concurrent.thread
@@ -101,15 +102,16 @@ class WorldScreen(val viewingCiv:CivilizationInfo) : CameraStageBaseScreen() {
 
         update()
 
-        if(gameInfo.gameParameters.isOnlineMultiplayer && !gameInfo.isUpToDate){
+        if(gameInfo.gameParameters.isOnlineMultiplayer && !gameInfo.isUpToDate) {
             val loadingGamePopup = PopupTable(this)
             loadingGamePopup.add("Loading latest game state...")
             loadingGamePopup.open()
             thread {
-                try{
-                    // todo!!!
-                }
-                catch (ex:Exception){
+                try {
+                    val latestGame = OnlineMultiplayer().tryDownloadGame(gameInfo.gameId)
+                    latestGame.isUpToDate=true
+                    game.loadGame(latestGame)
+                } catch (ex: Exception) {
                     loadingGamePopup.close()
                 }
             }
diff --git a/core/src/com/unciv/ui/worldscreen/optionstable/DropBox.kt b/core/src/com/unciv/ui/worldscreen/optionstable/DropBox.kt
index 490e0b6c..5bc2867c 100644
--- a/core/src/com/unciv/ui/worldscreen/optionstable/DropBox.kt
+++ b/core/src/com/unciv/ui/worldscreen/optionstable/DropBox.kt
@@ -1,6 +1,8 @@
 package com.unciv.ui.worldscreen.optionstable
 
+import com.unciv.logic.GameInfo
 import com.unciv.logic.GameSaver
+import com.unciv.ui.saves.Gzip
 import java.io.BufferedReader
 import java.io.DataOutputStream
 import java.io.InputStreamReader
@@ -10,13 +12,10 @@ import java.nio.charset.StandardCharsets
 
 class DropBox(){
 
-    /**
-     * @param dropboxApiArg If true, then the data will be sent via a Dropbox-Api-Arg header and not via the post body
-     */
     fun dropboxApi(url:String, data:String="",contentType:String="",dropboxApiArg:String=""):String {
 
         with(URL(url).openConnection() as HttpURLConnection) {
-            requestMethod = "POST"  // optional default is GET
+            requestMethod = "POST"  // default is GET
 
             setRequestProperty("Authorization", "Bearer LTdBbopPUQ0AAAAAAAACxh4_Qd1eVMM7IBK3ULV3BgxzWZDMfhmgFbuUNF_rXQWb")
 
@@ -74,4 +73,18 @@ class DropBox(){
         var path_display=""
     }
 
+}
+
+class OnlineMultiplayer(){
+    fun getGameLocation(gameId:String) = "/MultiplayerGames/$gameId"
+
+    fun tryUploadGame(gameInfo: GameInfo){
+        val zippedGameInfo = Gzip.zip(GameSaver().json().toJson(gameInfo))
+        DropBox().uploadFile(getGameLocation(gameInfo.gameId),zippedGameInfo)
+    }
+
+    fun tryDownloadGame(gameId: String): GameInfo {
+        val zippedGameInfo = DropBox().downloadFile(gameId)
+        return GameSaver().gameInfoFromString(Gzip.unzip(zippedGameInfo))
+    }
 }
\ No newline at end of file
diff --git a/core/src/com/unciv/ui/worldscreen/optionstable/PopupTable.kt b/core/src/com/unciv/ui/worldscreen/optionstable/PopupTable.kt
index dc7acc64..c907ca60 100644
--- a/core/src/com/unciv/ui/worldscreen/optionstable/PopupTable.kt
+++ b/core/src/com/unciv/ui/worldscreen/optionstable/PopupTable.kt
@@ -38,5 +38,7 @@ open class PopupTable(val screen: CameraStageBaseScreen): Table(CameraStageBaseS
         button.onClick(action)
         return add(button).apply { row() }
     }
+
+    fun addCloseButton() = addButton("Close"){close()}
 }
 
diff --git a/core/src/com/unciv/ui/worldscreen/optionstable/WorldScreenMenuTable.kt b/core/src/com/unciv/ui/worldscreen/optionstable/WorldScreenMenuTable.kt
index af0f6030..1af17544 100644
--- a/core/src/com/unciv/ui/worldscreen/optionstable/WorldScreenMenuTable.kt
+++ b/core/src/com/unciv/ui/worldscreen/optionstable/WorldScreenMenuTable.kt
@@ -65,7 +65,7 @@ class WorldScreenMenuTable(val worldScreen: WorldScreen) : PopupTable(worldScree
             remove()
         }
 
-        addButton("Close".tr()){ close() }
+        addCloseButton()
 
         open()
     }
@@ -83,7 +83,7 @@ class WorldScreenCommunityTable(val worldScreen: WorldScreen) : PopupTable(world
             remove()
         }
 
-        addButton("Close".tr()){ close() }
+        addCloseButton()
 
         open()
     }
diff --git a/core/src/com/unciv/ui/worldscreen/optionstable/WorldScreenOptionsTable.kt b/core/src/com/unciv/ui/worldscreen/optionstable/WorldScreenOptionsTable.kt
index 19b31522..ff5e990b 100644
--- a/core/src/com/unciv/ui/worldscreen/optionstable/WorldScreenOptionsTable.kt
+++ b/core/src/com/unciv/ui/worldscreen/optionstable/WorldScreenOptionsTable.kt
@@ -96,7 +96,7 @@ class WorldScreenOptionsTable(val worldScreen:WorldScreen) : PopupTable(worldScr
         scrollPane.setScrollingDisabled(true,false)
         add(scrollPane).maxHeight(screen.stage.height*0.6f).row()
 
-        addButton("Close"){ close() }
+        addCloseButton()
 
         pack() // Needed to show the background.
         center(UnCivGame.Current.worldScreen.stage)