Epic has a client, my experience with it is that it's better than Ubi's and similar to EA's the last time I used that last year. Not Steam class of course, but okay in the 'others' category.
I missed some when Epic started the freebies, but have probably got most of those in the meantime since Epic do have repeats every so often.
I have it weekly recurring in my pop-up reminder app, so easy to manage.
Free Epic Games I played but didn't stick with:
A Plague Tale Innocence
A Total War Saga: Troy
Alan Wake
Alan Wake’s American Nightmare
Alien: Isolation
Ark: Survival Evolved
Chess Ultra
Chivalry 2
Control
Death Stranding
Dying Light Enhanced Edition
Europa Universalis IV
Frostpunk
Galactic Civilizations III
Grand Theft Auto V: Premium Edition
Hello Neighbor
Hitman
Into The Breach
Just Cause 4 Standard Edition
Kingdom Come: Deliverance
My Time At Portia
PC Building Simulator
Rise Of The Tomb Raider
Rollercoaster Tycoon 3 Complete Edition
Shadow Tactics: Blades Of The Shogun
Subnautica
The Outer Worlds: Spacer's Choice Edition
The Vanishing Of Ethan Carter
The Witness
Thehunter: Call Of The Wild
Tiny Tina's Assault On Dragon Keep: A Wonderla...
Tropico 5
Untitled Goose Game
Free Epic Games I played:
Cities: Skylines
Civilization VI
Gone Home
Infinifactory
Ken Follett's The Pillars Of The Earth
The Stanley Parable
The Talos Principle
Ticket To Ride
World Of Goo
On future try/play list:
Farming Simulator 22
Gloomhaven
Homeworld: Deserts Of Kharak
Human Resource Machine
Metro 2033 Redux
Metro Exodus - Gold Edition
Metro Last Light Redux
Orcs Must Die! 3
Prey
Sherlock Holmes: Crimes And Punishments
Terraforming Mars
Watch Dogs 2 Standard Edition
Watch Dogs Standard Edition
What Remains Of Edith Finch