At first, I know your Scratch skills(Scratch is the easiest programming language I've ever seen, check it out: scratch.mit.edu) And when I first saw this game, I immediately thought of Idle mine. Mikauo, if you read this, check that game out (If you didn't already know it) and get some inspiration. At second, I don't think the whole "hold your mouse down is the easiest way" thing is that good for your game. I don't know all your script, but I do can think of it. Maybe it's better if you add a "Wait until not mouse down" block. Third of all, you must delete the "your name" thingy in the bottom-right. You know it only works in Scratch. I hope you read this and do something with these tips! Please + this comment if you agree!
Check out this level: http://www.thegamehomepage.com/play/super-stacker-2/Watch-out-for-big-circle/c4Q4Q004Q68r4Q0f002p8J_r0J0J008r1s1s004t0J0J3D3t0J0J0J1t0Y0Y2U1t0Y0Y4m1/
 "Mine and Upgrade"){kind=icon}
 "There is no game"){kind=icon}
 "Solipskier"){kind=icon}
 "Shadowless"){kind=icon}
 "Idle Racer"){kind=icon}
 "Learn to Fly 3"){kind=icon}
 "Kongpanio"){kind=icon}
 "Cargo Bridge: Armor Games Edition"){kind=icon}
 "Bloons TD 5"){kind=icon}
 "Idle Mine"){kind=icon}
 "You are a..."){kind=icon}
 "Super Stacker 2"){kind=icon}
 "Swords and Souls"){kind=icon}
 "Epic Combo!"){kind=icon}
 "Jacksmith"){kind=icon}
 "Ninja Assault"){kind=icon}
I can't beat you...