There are a number of game development deals that launched today including the Unity Spring Sale, the Synty Super Sale and a pair of Humble Bundles.
The Unity Asset Store Spring Sale is an annual sale where you can get 500+ popular Unity assets 50% off. In addition there are a series of Flash Deals that start at 80% off, then as they sell out, the savings drops to 70%, then 60% and finally settles at 50%.
The Synty Super Sale is a huge collection of Synty low polygon assets for sale, also 50% off. When purchased from Synty (instead of Unreal or Unity asset store), you get the source objects as well as Unity and Unreal versions. Additionally they have a featured content pack on sale for 70% off each week (of the 3 week sale).
You can learn more about all of these deals, bundles and sales in the video below. The above links may contain an affiliate code that pays GFS a commission if used (and thanks so much for the support if you do!).