diff --git a/app/src/main/java/org/ntlab/irisclient/viewmodels/GameViewModel.java b/app/src/main/java/org/ntlab/irisclient/viewmodels/GameViewModel.java
new file mode 100644
index 0000000..e4d1820
--- /dev/null
+++ b/app/src/main/java/org/ntlab/irisclient/viewmodels/GameViewModel.java
@@ -0,0 +1,81 @@
+package org.ntlab.irisclient.viewmodels;
+
+import org.ntlab.irisclient.entities.RoomJson;
+import org.ntlab.irisclient.models.Member;
+import org.ntlab.irisclient.models.Settings;
+import org.ntlab.irisclient.resources.RoomsRest;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import java.util.List;
+
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import retrofit2.Retrofit;
+import retrofit2.converter.jackson.JacksonConverterFactory;
+
+public class GameViewModel extends TimerViewModel {
+
+
+    //フィールド
+    private String rid;
+    final private MutableLiveData<RoomJson> roomMutableLiveData;
+    final private MutableLiveData<Settings> settingsMutableLiveData;
+    final private Retrofit retrofit;
+
+    //更新比較用フィールド
+    private Settings settingsPreData;
+    private RoomJson roomJsonPreData;
+
+    //------------------------------------------------------------------
+    //コンストラクタ
+    public GameViewModel() {
+        this.roomMutableLiveData = new MutableLiveData<>();
+        this.settingsMutableLiveData = new MutableLiveData<>();
+        this.retrofit = new Retrofit.Builder()
+                .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/iris/")
+                .addConverterFactory(JacksonConverterFactory.create())
+                .build();
+    }
+
+    //----------------------------------------------------
+    //setter
+    public void setRid(String rid) {
+        this.rid = rid;
+    }
+
+    //--------------------------------------------------------------
+    // getter
+    public LiveData<RoomJson> getRoomLiveData() {
+        return this.roomMutableLiveData;
+    }
+    public LiveData<Settings> getSettingsLiveData() {
+        return this.settingsMutableLiveData;
+    }
+
+    //-----------------------------------------------------------------------------
+    // updates
+    @Override
+    public void update() {
+        updateRoom(rid);
+        updateDno(rid);
+    }
+    //部屋の情報の更新(RoomJson)
+    public void updateRoom(String rid) {
+        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
+
+
+    }
+
+
+    public void updateDno(String rid) {
+        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
+
+
+    }
+
+
+}