價格：免費
更新日期：2015-07-02
檔案大小：40 MB
目前版本：1.1
版本需求：需要 iOS 6.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Enjoy! Try to protect Earth for as long as possible from incoming comets! With simple gameplay and mobile in mind, precision counts.
Earn multiple themes (real Space BG image / Music) by reaching Score 'Tiers'. Learn interesting tidbits on Space Exploration itself !
Score extra points with multiple bonuses such as Consecutive Hits (combo 3+) or Distance Hits. Comets may break apart if not directly hit with a Rocket Explosion.
If any comet hits Earth, it's game over! Unlock all the themes or try to beat the best score!
* Leaderboards
** Music by Chris Zabriskie, images and information from http://www.nasa.gov **
支援平台：iPhone, iPad