Escape Route

You are an escaping prisoner, you flee from prison using an underground tunnel. You have a map, but it's not always complete. You have to find the pickaxe to clear the exit. When you are too far from starting point, drones will come after you ! 

Mazes are procedural, with 6 levels of difficulty :  can you beat all of them in one run, collecting all the gold you can ? Have fun playing!