Those indestructible tiles are always there, they are hidden behind a "fog of war". You could not see them until the miners got near.
Recent community posts
Visit https://michaelborrego.wordpress.com/ for The Great Beyond updates, game discussions, reviews, and future games that I make!
The Great Beyond is a Management, Tower Defence, Real-Time Strategy game!
Build Quarters for your units to sleep, manage food production, hire soldiers to run your towers, and build defences to stop aliens from attacking your rocket!
Mine the terrain with simple digging tools for gold and gems. No need to gather building material, everything is spent with gold. This game comes with three levels and a tutorial level, but more will be added if the game becomes popular.
Making The Game
I made this in C# using my own engine built on top of MonoGame. It took me five months over the summer holidays of 2017.
I have been making games in this genre for a long time, and you can find out about my obsession of tycoon games at my blog site!