There was a download of Industrial Sky Base 3 4.3 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free program was originally developed by Falco Software Company. The software relates to 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.
From the developer:
After decimating the monsters on the landing site and sending a distress signal, you decided to look around the base. But as soon as you approached the entrance, far more terrible monsters ran out to meet greet you. After grabbing your weapon and killing the very two first monsters, you rushed upstairs. There was ammunition scattered everywhere. Time to get it together and wait for help, but beware of the still monsters.
You may want to check out more software, such as Sky Sports, Red Sky or Bookmark Base, which might be related to Industrial Sky Base 3.