XXXtreme Lightning Roulette

XXXtreme Lightning Roulette
A board of tiles fills the screen. Every one of them carries the same colour — except one, which is a little darker. Your job is simple to state and hard to do: find that tile and tap it before the round timer runs out.

The first rounds are generous. The odd tile sits there almost announcing itself, and your finger finds it before your eyes finish sweeping the grid. Then the grid grows. More tiles, more places for one quiet shade to hide, and less time to sweep them.

XXXtreme Lightning Roulette
Fifteen levels turn the screw in three directions at once. The board gets larger. The difference between the common colour and the darker one narrows until it stops being a colour difference and becomes something you feel rather than see. And the timer keeps getting shorter, so second-guessing costs as much as looking in the wrong corner.

A level is not an all-or-nothing wall. Clear at least half the rounds in a level and it counts as cleared, so a couple of bad reads early on do not undo the ones you got right. That margin is what lets you push into a level that feels a step too fast for you and come out the other side anyway.

XXXtreme Lightning Roulette
What makes it hold up is that there is nothing to learn but seeing. No combos to memorise, no timing to drill. Just a grid, one tile that is slightly wrong, and however long the round gives you to notice it. Some rounds you spot it before you have finished looking. Some rounds the answer was in the first row the whole time and you swept past it twice.