Pretty neat game! I've sunk a few hours into it and have a few thoughts:
Would love a feature where first click safety (making sure the first click is a zero tile) is added, and then modifiers are set (ie marking, modifiers, and the like). This would make the initial click a bit more fair as you wouldn't be stuck with a numbered tile, and randomization would be a bit easier.
Would love to sink more hours on this (and would even pay for it here or on Steam) as a full experience.