Monte Carlo

Monte Carlo is a matching game with one clever wrinkle. Twenty-five cards in a grid, remove any touching pair of equal rank — including diagonally — and then everything slides up and left to close the gaps before the grid refills.

That sliding step is what saves it from being pure chance. Cards that were nowhere near each other become neighbours after a consolidation, so the order in which you take pairs genuinely matters, and a player who thinks about it will clear more decks than one who just takes whatever is obvious. It is quick, it is compact, and it goes under some pleasant older names — Good Neighbours and Weddings among them.

Twenty-five cards are laid out in a five-by-five grid and the rest set aside as stock. Any two cards of matching rank that touch — horizontally, vertically or diagonally — can be removed together. When you have taken what you can, the remaining cards slide up and to the left to close the gaps, and fresh cards from the stock refill the grid to twenty-five. Keep going until either the deck is cleared, which wins, or no adjacent pair remains.

There is more here than it first appears. Because the grid consolidates toward the upper left after every round of removals, which pairs you take changes which cards end up adjacent afterwards — so occasionally the right move is to leave an easy pair alone because removing it would separate two cards you need to bring together. Work from the bottom right, since those positions shift most when the grid closes up. It remains a largely luck-driven game, but the consolidation step is a genuine lever.