This study focuses on clarifying mechanism for alternative media based on twitter. Alternative media based on twitter is different from mass media because it has gameness for improving interactivity between news providers and news receivers. This study argues that the gameness could be quests. News providers provide quests to news receivers, so news receivers can expand their territory with playing quest. This aspect is related to the feature of Alternative Reality Game. News receivers participate in News distribution and News production because of its intrinsic rewards. Therefore, twitter communities by playing quests are similar to the communities of digital game's community and Crowdsourcing projects are appeared in alternative media based on Twitter.