Acornsoft Planetoid (1984)(Acornsoft)[a] ROM Download can be obtained free for Acorn Electron on EmuGames.net only. Play emulator game in English for the USA region. Acornsoft Planetoid is a Acorn Electron ROM that you can download to your computer or play online within your browser. You can also download roms such as Simcity and Defcon 5 that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.