Scrapnaught is a top-down survival game that gets an alpha demo that you can download over at its Steam store page, an open world game developed by SpiffyBit, that has steampunk elements where have to manage your oxygen tanks, generate electricity, mine for some materials, plant and look after your farm as you also build your home into a robotic oxygen filled haven.
You have to fight robots as you scavenge in their area and advance your level, to then prepare in order to defend yourself from enemy raids.
