Downloading Interstelar 1.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The software is categorized as Games. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This free Mac app is a product of Jose Antonio Vazquez Mingorance.
From the developer:
Interstelar is a spaceship game with multiple stages. The program contains 5 selectable levels of increasing difficulty. The point of the game is to shoot things and score points. You need to complete all stages to get the record for scoring the highest level.
You may want to check out more software for Mac, such as Qwak, Gaichu or Plantas VS Zombis, which might be similar to Interstelar.