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GOG has a couple of deals up. Magrunner: The Dark Pulse is on sale for $10 (50% off) until 9/5 as the Indie gem promo deal.
Some Strike Suit Zero DLC has been released on GOG so you can pick them up at 50% off as a special promotion.
Strike Suit Zero: Heroes of the Fleet DLC $3.49
Strike Suit Zero: Raptor DLC $1.49
Deal ends on 9/9.