Opsu is a Java-based open-source version of the popular rhythm game osu! that is now available on the Play Store. With Opsu, players can download beatmaps from any source and play them on their mobile devices. The app also allows users to post their scores on leaderboards and compete with friends. <br/><br/>One of the key features of Opsu is its open-source nature, which means that the app is free to use and can be modified by anyone. The app is published under the GNU GPL v3 license, which ensures that the source code is available to anyone who wants to use it. This makes Opsu a great option for anyone who wants to play osu! on their mobile device without having to pay for the version. <br/><br/>Finally, Opsu gives credit to all the artists who contributed their artwork to the app. Users can find a list of these contributors on the app's website. This is a great way to show appreciation for the hard work that went into creating the app and its various components. Overall, Opsu is a great option for anyone who loves rhythm games and wants to play osu! on their mobile device. <br/><br/>In conclusion, Opsu is an open-source version of osu! that is now available on the Play Store. The app is written in Java and allows users to download beatmaps from any source and play them on their mobile devices. It is published under the GNU GPL v3 license, which makes it free to use and modify. Finally, the app gives credit to all the artists who contributed their artwork to the app. Overall, Opsu is a great option for anyone who loves rhythm games and wants to play osu! on their mobile device.