The SFXEngine Bolt-on Full Set now has a 50% discount. This bundle contains all ten 'Bolt-on' Engine Sets: Sample, Analogue, Amplitude, Pitch, Pan, Filter, Delay, Reverb, Distortion, and Special. With this bundle, the 13 Core Engines that ship with SFXEngine will be boosted to the maximum 65.
As with all Steam Bundles, you pay only for what you don't already own.
https://store.steampowered.com/bundle/38164/SFXEngine_Bolton_Full_Set/
Not tried SFXEngine yet? Find the full app and a free demo, here:
https://store.steampowered.com/app/2438590/SFXEngine/
Enjoy creating!
Mark