A little too addictive! lol. I booted it up and was like, eh, okay, pretty simple puzzles... and then I couldn't close it for over an hour LOL! So I'd say the game is a success for me XD
One thing that did confuse me was how the tiles are initally randomly colored blue/green, since when marking tiles as mines/question marks, they become green or blue respectively. I'd expect that either the background color wouldn't change when marking tiles, or, even better, that the background would be completely different color(s) for "neutral" unmarked tiles. I see that the "high-contrast" mode has a separate mine color, which is cool! But it seems that the question mark is still one of the initial colors :o