ピクロス2 - Japanese spelling
Picross 2 has two modes of play: the first, Mario's Picross, has you solving Picross puzzles with Mario. In this mode, the timer ticks down from 30 minutes, and you must solve the puzzle before the timer reaches zero. If you chip away an incorrect square, you are penalized time (first two minutes, then four, then eight).
After solving a certain amount of puzzles in Mario's Picross mode, you can play Wario's Picross. In this mode, the timer starts from zero and counts upwards. You are not penalized time for any mistakes, however, this means that you do not know which squares are correct and which ones are incorrect until the puzzle is complete.