Steam has added Wishlist filters that will allow you to now sort by discount percentage, which I am sure everyone will that likes Steam Sales will appreciate. You will now also be able to sort by game genre, early access, and unreleased games as well. Also, once you get your filters dialed in, those will save and reply for your next visit. And last but not lease, finally you will be able to put the game in your cart directly from the Wishlist.
Today we rolled out an update giving you more control over your Steam Wishlist. This update adds more filtering and sorting options, and shows more relevant information such as Early Access state, review score, and ‘add to cart’ buttons (when available).
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Source: [H]ardOCP – Steam Rolls Out New and Improved Wishlist