The 1.0 version of Icosphere for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The application lies within Games, more precisely Action. The most popular version of the tool is 1.0. The actual developer of this free software for Mac is Oliver Boyce.
From the developer:
Icosphere is a retro style, endless runner gameplay that invites you to fly through unique alien worlds. There are 7 different environments each with 3 different color schemes plus a final endless zone. The goal is to stay alive for as long as possible by collecting all available orbs and avoiding on-screen spikes.
You may want to check out more Mac applications, such as Jets'n'Guns, Rubicon X or Marathon Red, which might be similar to Icosphere.