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Sort your Steam wishlist by comparing two games at a time. Perfect solution for those who have many games in their wishlist but doesn't know where to start. It should cut the time it takes to sort normally but it will still take relatively long for those with huge wishlists. Worry not! You can always save and come back later to finish sorting.
You will be presented 2 games at a time. Pick the one you wish the most. You can see your progress at the bottom. You can close the overlay by clicking the X on the top right.