Have enjoyed the game until today. Had worked thru many, many levels only to find it all erased ! Back to level 1! 😡 Snookered again! Started over, only to have the game dump all my progress again! I had gotten through Colorado (levels are organized by states then cities). Apparently, they only constructed some of the states. It ends without warning. Don't waste your time on this game. Shamefully unfinished/broken!