Hi Steve.
Thanks for getting back to me so soon.
I am still loving this game. Just reached day 53 on endless mode.
I have a few suggestions that might be interesting, but again just suggestions and nothing more.
1. Mouse controls so the character walks to where you point and click. (by the time I got to day 27 my wrist was messed up! I actually had to take a break!)
1. A shovel upgrade that turn it in to a drill. (for breaking large rocks in to gravel to fill in craters)
2. A radar/compass that could upgrade (to possibly to a second needle for a compass) to locate water deposits beneath the ground.
3. Okay, stay with me on this one.
-An Industrial strength drilling unit (to drill down to water deposits.)
-A water pump ( for drawing up said water.)
-pipe units (that can be laid from your water pump to your water containment unit/Moon Base.)
Water could then be transported directly to multiple greenhouses, creating a sort of hydroponic system.
Now this is where it gets a little out there!
I don't know what level of realism you wanted to stick to, but how about being able to build a communications array to be able to contact the base on your home planet other space craft in the area. That way you could open up a whole trading aspect of the game!
Trading food, water, seeds or even "plant water" (plants+water=plant water "It's as delicious as it sounds!") in exchange for new tech, seeds, animals or whatever!
Anyway like I said, these are just suggestions and nothing more. I'm in no way telling you how to build what is my opinion an already brilliant game. I hope this helps you figure out where you want to take the game.
P.s. I'm an Illustrator and I'd love to help work on this game for a credit.
Check out some of my stuff here and let me know what you think
https://issuu.com/davidcoppin/docs/portfolio_c7ee3...
https://www.facebook.com/thevideoshop76/
Thanks again for a great game.
David.