It is a game that obtains iron ball that the enemy on the screen throws out, and defeats the throw return enemy. Iron ball that can be obtained is one though iron ball is obtained by the automatic operation. When it hits other iron ball with Tetstama, it is game over. If the enemy is continuously defeated, it becomes a high score.

Sidenote: At the point of posting this application has been marked as beeing freely available without costs. As this game is hosted with the AppStore the status might change. Authors like to publish their games for free for promotion purpose and then make it commercial. Also it could happen that the author decides to take the game down.