Tower Defense Strategy

Shrinked version: Someone in the future beats a small monster with a group of sand sculpture players in a staggered time. … Traditional introduction: Someone who is playing an ancient game, is playing, suddenly finds that the accelerator key is gone. Slowly I discovered that there was a problem with the sand sculptures around me, and realized that the game has undergone an unknown change in time and space. At the same time, another time-space player’s world is being invaded by unknown creatures in the world. Maybe the game information can be used as a reference? - Description from MTLNovel Details