This is a really nice game. Its very polished, the ambience of the factory and the other sound effects work well to set the mood. The game is very juicy and, if you can do the typing at speed, it becomes very satisfying. My one critique: Its hard to tell what letter comes next when the typing wheel has crossing lines. At least for me that lead to allot of mistakes when going as fast as the game wanted me to. I think just highlighting the next button you need to press, (rather than the previous one you pressed) would make this allot less confusing and you could play it allot faster - and hence have more fun.
Overall i think you are onto a good idea here, and with a few small tweaks you could make this really satisfying to play! Speaking of satisfying games, come check out ours too! We would appreciate any feedback you have!