These are some great games made by Uppercut Games from Melbourne I think (https://www.uppercut-games.com).
So this is a good opportunity to support the local talent, industry, and jobs.
Submerged looks beautiful and has a great story.
City of Brass is more action-packed (it was given away as an Epic freebie previously, too).
https://store.steampowered.com/app/301840/City_of_Brass
Epoch is their first game and looks pretty fun for a rail shooter with Robots - definitely looks like a few hours of fun for $2!
https://store.steampowered.com/app/270510/EPOCH
Enjoy!
Submerged looks nice got it