Nice game! (i played the build v2) I did not like the upgrading system for the rock quarry, going from around 4sec for 5 rocks to around 8sec for 10 rocks does not feel like an upgrade... this made the process of getting material more annoying,  it took me 40min to finish this game, which was a bit too long for me :( However, except for that and some small bugs here and there, the game was well made. I just wished upgrading did not lead to making me wait more... but great game!