Fire up uPlay and you can get the starter edition of For Honor for free. You need to get it before 6/18. It seems the starter edition is just a really grindy version of the full release. You can apparently unlock everything via in game currency, it just might take a bit to earn it. Quake Champions is also free on Steam, also through June 18. Not sure what you get for free, as they also have a paid version. Maybe fewer heroes, etc. but still worth a pick up if you didn't get a chance to try the beta.
If they haven't changed the quake champions business model much the idea is you get 1 champion (Ranger) and there's a rotation that unlocks another champion for that week. If you don't want to buy them with real money you can spend the currency you earn at the end of each match to "rent" a champion for 24 hours. Supposedly you can also get champions from the various types of lootboxes but they are rare. Or you can buy the champion pack on steam which just unlocks them all. Ranger is a decent enough champion but not having them all does suck and was probably my least favorite part of the early beta. The game is fun but I stopped playing it because they are still trying to figure out how to balance it as well as experimenting with game modes so every month the whole game changes wildly.
