Saw this game at Blitz's youtube channel,and I downloaded it but this black grass came up I thought it might be night time but on Blitz's 30min video it was always day time,so yeah !
Well if you get any idea how to fix it or what is issue,please contact me :D btw,great game and idea you got,there are lots of options to improve it and add more things but it all takes time and hard-work.Wish you luck with this game in future :D
I can't program aside from reverse engineering, but if you found a way to send me the folder containing the game, i could look into it to fix it? or send you my version ( it might work?)