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Portal Bird
![Portal Bird](https://media.9game.cn/gamebase/20230730/12/28/4fe617a0d6a2464a9d3176ce8506a930.jpg?x-oss-process=image/resize,w_120,m_lfit)
Portal Bird mixes the addicting and challenging gameplay of Flappy Bird with portals that reverse the environment and the gameplay. Tap to flap your wings and see how far you can get, then compare your scores worldwide through the leaderboard!