Game reminds me of Elite/EliteII:Frontier games which were the old granddaddies of the space trading games. I remember having fun trading in nerve gases, weapons and all sorts of other illegal stuff as it got the highest prices lol, so I could get my Panther Clipper faster (in EliteII: Frontier).
While it has a nice concept and isnt badly executed at all, I'm not sure I like the fact you have to restart from level 1 if you die. But maybe that is just me making a trivial complaint lol.
Love this game, the ambient sound effects really capture what must have been the dreary nature of the trenches in WWI.
Also like how the units are pretty accurate (ie A7V tanks, sturmtruppen [in the full version where you can play as germans]).