I like the allure of pressing a big red button and seeing what it does. It feels really nice to press that button - the animation and sound effects are right on. I experience a big drop in frame rate, which made the mini games almost unplayable (after the first $5000 upgrade). I don't see other comments about this, so the trouble might just be on my end. The other trouble I had was the size of the viewport. I was playing with the window maximized and I think I could see outside of the intended viewport area. I don't think I'm explaining this very well, but for example, I the progress counter during the mini games would reach about 70% across my screen and then I would be taken back to the button scene. Maybe the scenes for the mini games is not scaling to match the size of the window.
Even with all my technical trouble, I had fun playing your game!