Planet Memorial Edition was released on April 30, 2010. The Memorial Edition also came bundled with the three previously released Planetarian drama CDs. An HD edition for Windows was released on July 29, 2016. Planetarian was released on Steam by Sekai Project in English for Windows on September 12, 2014, with later support planned for macOS and Linux devices. The Steam release was updated on September 17, 2014, to allow the user to switch to the original Japanese version of the game. An English version of the HD edition was released on September 19, 2022. A consumer console port of the game was released for the PS2 on August 24, 2006, by Prototype. A version playable on FOMA and SoftBank 3G mobile phones was released by Prototype through Visual Arts Motto on November 28, 2006. A limited edition version of Planetarian developed by Prototype playable on the PlayStation Portable (PSP) was available for purchase between February 28 and March 1, 2009, at Key 10th Memorial Fes, an event held in commemoration of Key's ten-year anniversary. A downloadable version of the PSP release via the PlayStation Store was released by Prototype on August 24, 2009. Prototype again sold the PSP version at their Prototype Fan Appreciation 2010 event on May 30, 2010. The PSP version was re-released on May 12, 2011, as a fundraising release for the 2011 Tōhoku earthquake and tsunami. A mobile app version playable on Android and iOS devices was released on November 30, 2011. An updated iOS version released in January 2013 includes support for English readers. Prototype released a Nintendo Switch version on January 31, 2019. Snow Globe Visual Arts launched a crowdfunding campaign on November 29, 2019, to produce an original video animation (OVA) episode titled Planetarian: Snow Globe. By the end of the campaign, the final stretch goal had been achieved for Key to produce a kinetic novel version of Planetarian: Snow Globe for Windows. The Snow Globe kinetic novel was released on September 3, 2021 with the Planetarian Ultimate Edition that also included a re-release of the 2016 HD edition of Planetarian: The Reverie of a Little Planet for Windows, the three previously released drama CDs, and an art book. A downloadable edition of Snow Globe for Windows was also released at the same time. The staff for Snow Globe was the same for The Reverie of a Little Planet with the scenario