The only game that I'm positive I'll purchase is the System Shock Remate @ 20% off, and considering it only came out a month ago, that's a pretty good discount. I'm just waiting until I finish the Palace of Ice DLC for Solasta (which should be in the next day or two) before I buy it.
Just going by my Steam Wish List, the only other games that I'm currently considering, and those probably marginally, as I'll be pre-ordering Starfield August:
Nordic Warriors. An Indie RTS that's very similar to the old Myth RTS games from Bungie years ago. I don't know how many of you are old enough to have played those games, but they were great fun, especially with the destructive environments which was rather new back then. 70% off @ $5.99.
Enter the real time tactical nightmare of Nordic Warriors and use your handful of brave souls to stem an endless horde of undead horrors. You'll need to take advantage of the terrain and your Hero abilities to heal and lead your units as you blast, smash or slash your way through the unfolding...
store.steampowered.com
Phantom Doctrine. Part TBS and RPG, spy thriller. 90% off @ $3.99
The year is 1983. The world teeters on the verge of destruction as the Cold War tightens its icy grip. East or West: trust no one, question everything. The fate of humanity rests in your hands as you pit spy versus spy in tactical Phantom Doctrine.
store.steampowered.com