After subscribing to EA Play on Steam, I noticed that the 10% EA Play discount did not stack with the Winter Sale discount, however GG.deals is showing the 10% discount on top of the Winter Sale discount.
Mass Effect Legendary Edition, for example, is currently showing in the sale with an active EA Play subscription as £12.49 (in the UK). GG.deals with the 'Steam - EA Play Discount -10%' special discount active has it listed as £11.24.
