I installed the Epic launcher months ago and I check it regularly to see which game I can get for free. Mostly crap but sometimes decent or even good. I picked up Uncharted4 for free recently. I think it's just part of their advertisement campaign to get people to their store. I like it and I don't understand people a bitching about it: If you don't want it, don't go there.
Just like using Google: If you like your privacy, don't go there... But if you want to find shit: Use it.
Thanks to Epic and Uplay (if you get a Uplay game on Epic, you also get it on Uplay, you don't need Epic Launcher to launch it after), I got 6 of the 11 Assassin creed games for free on my Uplay Account, i just bought 1, Revelation and Rogue for 9€, so thanks to them i got 90% of the main franchise for 9€ x).
Got AC1 when I bought my 8800 GTS back in the days never touched it again, i just dived in now and it's a pleasure ! Thanks to those free stuff
On notable games that I got from Epic i can say, ABZU, Alan Wake's games, the batman arkham trilogy and Batman Lego trilogy, Darksiders 1/2, For Honor, Just Cause 4, Layers of fear, Limbo, metro redux, Rayman Legends (with origins free on uplay i got the two games for free on uplay now), RIME, Sherlock Holmes C&P, Subnautica, superhot, Stanley parable, The wolf among us, The Talos Principle, this war of mine, surviving mars, Torchlight, Watch Dogs, Last Day Of June or also Kingdome Come Delivrance !
Yes, shovelwares...
I already bought GTA V twice, it's gonna be nice to have 2 more account just in case x)