Steam offers downloads of Mortal Kombat: Komplete Edition for Windows for $4.99. That ties last week's mention as the best price we've seen. (It's also a current price low by $15.)
Also available are downloads of Injustice: Gods Among Us Ultimate Edition for Windows for $7.49. That's $3 under our April mention and the best price we've seen. (It's also the lowest price we could find today by $23.) Both deals end June 6.