Hashteroids is a remake of the arcade classic Asteroids with a tweest.
In this shockingly modern adaption you are transported directly to the Twitterverse where you will pilot your ship though a deadly field of Tweeteorites. Destroy the Tweeteorites with your Twaser and watch them disintegrate into (a maximum of) 140 characters of twirling chaos. Microblog your achievements. All the while you can bathe in the games Tweet-Fed-Twenori futuristic soundtrack.
Or, more simply put:
+ See your Timeline
+ Search Twitter and follow Hashtags
+ Avoid and then destroy the Tweets when you have read them
+ Tweet your high scores