could you explain how the different game modes work? is there one without a mistake counter and error-checking/highlighting? I just like to solve grids without guessing, following number clues that fade out one by one, but don't want to be notified of or penalized by a misclick....

Considering you have to finish the game 3 times total in order to win all the colored stones, I'm surprised that these aren't Steam achievements. The third game is reportedly going to let you win the "easier" stones if you play on the higher difficulty modes (if you play in normal, you'd get both the green stone for relaxed mode and the blue stone for normal when you finish the level as an example). The same thing is true for DDM2: you have to play the entire game through 3 times to get all the colored s...