diff --git a/AlgebraicDataflowArchitectureModel/models/OnlineBattleGame2.model b/AlgebraicDataflowArchitectureModel/models/OnlineBattleGame2.model
new file mode 100644
index 0000000..4012b23
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/models/OnlineBattleGame2.model
@@ -0,0 +1,33 @@
+channel Signup {
+	out accounts(adb:Map, signUp(aid:Str, name:Str)) = insert(adb, aid, {"name": name, "point": 0})
+}
+
+channel ChangeName(aid:Str) {
+	out accounts.{aid}.name(prev_name:Str, changeName(name)) = name
+}
+
+channel CreateRoom {
+	out rooms(rdb:Map, createRoom(rid:Str)) = insert(rdb, rid, {"members": nil, "battle": false})
+}
+
+channel AddRoomMember(rid:Str) {
+	out rooms.{rid}.members(mList:List, addRoomMember(id:Str)) = append(mList, {"id": id})
+}
+
+channel Battle(rid:Str) {
+	out rooms.{rid}.battle(prev_result, battle(result:Bool)) = result
+}
+
+channel RoomName(rid:Str, mno:Int) {
+    in rooms.{rid}.members.{mno}.id(prev_mid:Str, sync(mid, name)) = mid 
+    in accounts.{mid}.name(prev_name:Str, sync(mid, name)) = name
+    out rooms.{rid}.members.{mno}.name(prev_name:Str, sync(mid, name)) = name
+}
+
+channel RoomResult(rid:Str) {
+	in rooms.{rid}.battle(prev_result, sync2(result, mid)) = result
+	sub RoomResult2(mno:Int) {
+		in rooms.{rid}.members.{mno}.id(prev_mid:Str, sync2(result, mid)) = mid 
+		out accounts.{mid}.point(prev_point:Int, sunc2(result, mid)) = if(result, prev_point + 1, prev_point)
+	}
+}