If you've run out of grocery store, animal daycare and small town life simulators, you could give the TPS genre a try while many of them are on sale. (WARNING: Don't expect the same kind of thrill you get from making change for a $100 bill)
Here's the PCG article link that highlights some of the games:
www.pcgamer.com
Here's the sale's main page
Here's a game that came out last month, looks decent (maybe?), is 50 percent off, and doesn't have any user reviews yet.
store.steampowered.com
Here's the PCG article link that highlights some of the games:

It's kind of weird that Helldivers 2 isn't in Steam's big third-person shooter sale, but there are plenty of other great deals so I don't really miss it
If over-the-shoulder shooting is your thing, this is your sale.
Here's the sale's main page

Here's a game that came out last month, looks decent (maybe?), is 50 percent off, and doesn't have any user reviews yet.

Save 50% on Incident X on Steam
Face the end in a high-intensity cinematic sci-fi shooter. Engage a colossal threat, rescue civilians, and survive relentless enemy waves in a city collapsing under the weight of the unknown. Your squad is the last line between humanity and total annihilation.