add Google Santa Tracker by @google

Author: Joker

categories/game.md

@@ -8,3 +8,4 @@ App Name                   | Describe                  | Major Language
 [Zabyrinth](https://github.com/Zachacious/Zabyrinth) | Physics Game based on the Layrinth board Game. | C++ | [![Get it on Google Play](https://developer.android.com/images/brand/en_app_rgb_wo_45.png)](https://play.google.com/store/apps/details?id=com.EpicElf.Zabyrinth)    
 [Gloomy Dungeons 3D](https://github.com/restorer/Gloomy-Dungeons-3D) | Old-school 3D shooter | Java | [![Get it on Google Play](https://developer.android.com/images/brand/en_app_rgb_wo_45.png)](https://play.google.com/store/apps/details?id=zame.GloomyDungeons.freedemo.game)
 [Gloomy Dungeons 2: Blood Honor](https://github.com/restorer/gloomy-dungeons-2) | Continuation of old-school 3D shooter | Java | [![Get it on Google Play](https://developer.android.com/images/brand/en_app_rgb_wo_45.png)](https://play.google.com/store/apps/details?id=org.zamedev.gloomydungeons2.fullnfree)
+[Google Santa Tracker](https://github.com/google/santa-tracker-android) | Google Santa Tracker app for Android is an educational and entertaining tradition that brings joy to millions of children (and children at heart) across the world over the December holiday period.  | Java | [![Get it on Google Play](https://developer.android.com/images/brand/en_app_rgb_wo_45.png)](https://play.google.com/store/apps/details?id=com.google.android.apps.santatracker)