Deponia
https://store.steampowered.com/app/214340/

Pretty sure everyone already owns this game already but if not, meowcome to the pawty!

https://store.epicgames.com/en-US/p/cozy-grove
https://store.epicgames.com/en-US/p/isonzo

Umm Oyoun free for a limited time on Epic

https://store.epicgames.com/en-US/p/ummoyoun-a2aa02

This is not a game, just a paid demo that is temporarily free.

On steam, the demo is permanently free (or paid, as you wish).

From the steam (and epic) game page:
"The game is currently under development and, at this stage, includes only one chapter. The current demo version is the same as the paid version."

Considering that it has received no updates in over a year and that the maximum number of players it has ever had on steam is 1, I suspect this project has been abandoned.

Paid demos? What next - pay-per-view trailers XD

EDIT: I'm guessing the value will increase as they add more chapters (steam demo will only be chapter one).

Hopefully it'll get more traction now it is on Epic, but if you don't think it is worth it then I guess don't claim it.

Also on EGS:

Wonderboy the Dragon's Trap is free for mobile

https://store.epicgames.com/p/wonder-boy-the-dragons-trap-android-cca4a4
https://store.epicgames.com/p/wonder-boy-the-dragons-trap-ios-b8e1a4

Update: Temp freebies on STOVE

Blue Messenger https://store.onstove.com/en/games/4509
Bullet Delivery Collection https://store.onstove.com/en/games/101940
Portal Escape https://store.onstove.com/en/games/1628
TCG https://store.onstove.com/en/games/104108

Epic Games:

Electrician Simulator - Link
It's time to put down your cat and put on your repair technician cap.
The game is a profession simulation like the name suggests.
You play as an electrician and repair numerous electrical appliances.
Meet your customers, enter their houses, fix their problems and connect all the wires.
Live as an electrician without getting your hands dirty.
There is a plot in this game.

Brief description from the storepage:
Take on the electrician role and learn the profession's basics! Install sockets, repair worn-out equipment, assemble broken appliances, replace light bulbs, and lay wires at your customers' homes. Be sure to check everything twice, with electricity there are no jokes!

Features single player only!

World of Warships - Epic Anniversary Tachibana Pack - Link
This is a DLC pack for the free-to-play, World of Warships.
It unlocks the premium Japanese destroyer warship called the Tachibana.
Includes 5 Epic camouflages for your warships!
You will need the base game if you haven't claimed it before.

Brief description from the storepage:
Get a Premium Japanese destroyer and some Epic permanent camouflages to celebrate our 5th year at Epic Games Store.

Features single and multiplayer!

Other ongoing giveaways:
nothing at the moment

Epic Games Mobile
Potion Permit - Stardew Valley but as an alchemist (with no metals)
Google
Apple

Next time: Havendock and Hyper Echelon

https://store.steampowered.com/app/3144950/Pet_LandsE/

Today is a cute day! Kawaii!! <3

Indie freebie on EGS: https://store.epicgames.com/en-US/p/need-for-spirit-offroad-edition-7eee16

Project Scrapper will become paid
Link: https://store.steampowered.com/app/821380/Project_Scrapper/
News Reference: https://store.steampowered.com/news/app/821380/view/533252382395466511?snr=1_5_9_

Get Narvas
https://store.steampowered.com/app/640700
Free to keep when you get it before 25 Mar @ 5:00pm UTC. Some limitations apply. (?)

Cyber Mines is temp free on XBOX
https://www.xbox.com/games/store/cyber-mines/9ndm5tm8tmcr

Wave Gods: Ammo Night is an indie giveaway on EGS
https://store.epicgames.com/p/wave-gods-ammo-night-7eb978

Going to Paid on April 9th
https://store.steampowered.com/app/3351550/Alien_Grounds/

Epic Games:

Havendock - Link
Put on your gear because you're sent to an island for castaway individuals!
This game is a cozy island builder with numerous important responsibilities.
Created by an indie game developer.
You're thrown into a beautiful 3D blocky world with the task to turn it into a paradise.
You need to shoulder resource management and the well-being of the entire society of exiles.
Everyone on this island will depend on your leadership.
You must also welcome new castaways who will periodically arrive to your island.
Can you transform this neglected island into a high-tech society?
Can you make an isolated world into a cozy friendly and warm community?
It is a cozy game after all in spite of the strategy system.
I'm sure the island won't end up burning in flames.

Brief description from the storepage:
Breathe easy and thrive in this cozy colony sim. Build a haven for castaways, manage resources, live your best life on the ocean. Lead your humble settlement into a high-tech society.

Features single player only!

Hyper Echelon - Link
Do you miss space shooters?
Maybe you've never heard of the retro arcade game known as space shooter.
Today, this game gives the retro genre a refresh while keeping the same birds eye view shooting.
Cyan Galaxy needs your help.
With your spaceship, you must defend the galaxy from the evil mysterious EXODON!
Level up your spaceship by picking up powerups thrown your way.
Dodge obstacles and attacks from enemy spaceships.
Help clear EXODON minions from all the sectors of the galaxy
To face the ominous final evil boss!

Brief description from the storepage:
The Cyan Galaxy is in peril! Your trusty little star fighter and rag tag squad of wingmen are the only hope against the evil EXODON! Level up from a pea shooter to an offensive powerhouse as you engage in frantic combat across many wondrous locales.

Features single player only!

Other ongoing giveaways:
I Need Spirit! Off-Road Edition - Tank Assault Indie Developer Hosted
WAVE GODS: AMMO NIGHT - FPS Zombies Indie Developer Hosted
Symmetry - Stranded Space Survival Indie Developer Hosted

Epic Games Mobile
The Wreck - 3D visual novel about altering a past tragedy
Google
Apple

Next time: Clone Drone in the Danger Zone

Sunderfolk
https://store.epicgames.com/en-US/p/sunderfolk-7300c3

i don't know is it forever free or become paid but looks ok