I agree with pretty much everything Aun Egg said. I personally don't find this game worthwhile.
The only level type that offers any sort of challenge is the Classic type, which for me was mostly chance. Additionally, better versions of it exist online (using colors or other more readable visible formats rather than 1s and 0s). The levels being timed necessitates some sort of strategy to be able to consistently solve the Classic puzzles, otherwise they're seemingly luck based. When attempting to find a strategy online that could focus my efforts so they weren't purely chance, I instead found a game breaking strategy that solves any solvable puzzle given enough time. Which is a problem for a lot of this game's randomly generated puzzles, as they are often not solvable. The "restart" button supposedly generates a puzzle again, but (for me) repeatedly generates other unsolvable puzzles on certain levels until finally one works.
The Counter mode is slightly hard because it is likely you will zone out and accidentally click a 0. The font is also hard to read, which can make both of these modes slightly more challenging (and less accessible). Online typing courses are more fun than the Pusher mode. I finished the entirety of the free Counter and Pusher levels (50 in total) before earning the second time-related achievement (play for 30 minutes).
The time achievements go up to 100 hours, which in my opinion doesn't reflect well on the game (they should not need to rely on achievements to keep people playing for that long). The only redeeming quality I have to say about the time achievements is that time in the menu screen seems to count, not only in-game time.