diff --git a/db/migrate/20190724013024_modify_final_score_for_games.rb b/db/migrate/20190724013024_modify_final_score_for_games.rb
new file mode 100644
index 000000000..e926cccd6
--- /dev/null
+++ b/db/migrate/20190724013024_modify_final_score_for_games.rb
@@ -0,0 +1,15 @@
+class ModifyFinalScoreForGames < ActiveRecord::Migration[5.2]
+  def change
+    grades = Grade.where(container_type: "Answer")
+    grades.each do |grade|
+      g = Game.find_by_id(grade.container_id)
+      if g.present?
+        if g.status == 2 && g.answer_open > 0 && g.final_score <= 0 && g.end_time < grade.created_at
+          g.update_column(:final_score, g.challenge.score)
+        elsif g.final_score < 0
+          g.update_column(:final_score, 0)
+        end
+      end
+    end
+  end
+end