Or one can go the Juntland Pro Edition way (Norm Koger)...
Storm Eagle Studios (SES), has rotational sales every day, so you can pick up Juntland or Distant Guns on sale if you keep an eye on them. Today Junland was on sale, still 12hrs left.
SES uses the "Stormpowered" app (similar to Steam), but you can play offline.
You do need to spend some time with it as itīs on the hardcore side but itīs great, you have a editor, multiplayer ect. Demo available too.
YT video gameplay:
Win10 Pro(x64), i7 8700k @ 4.7Ghz, 32GB ram DDR4, EVGA GTX 1070ti 8GB, M.2 PCIe NVMe (x2) 480GB + 960GB SSDīs, LG 29' Ultrawide 21:9 monitor Logitech G13, G502, TM Warthog HOTAS, CH Pro pedals, TrackIR 5.0, Corsair Void Pro 7.1 USB.