What is Reddit's opinion of Decromancer?

From 3.5 billion Reddit comments

Decromancer was a great game in this category. Probably my favorite single player ccg

I got three this time.

1.) What would you say your favorite game is that's rated below 4.0 stars on Google Play or Amazon? Less a request and more of a curiosity.

2.) Offline card games. Not solitaire/freecell, more like CCGs/TCGs/etc. Games I can play against the AI easily enough. I know of...Decromancer, Shadow Keep (not on Play Store anymore), Deck De Dungeon kinda fits? but the second one doesn't work for me, Hidden Dimensions 3, Mage VS Mage and World of Mages, I have the full version of Star Realms with no expansions, and...Triple Triad. I know about Magic 2015 but haven't bothered. I also haven't, uh, really played any of these.

3.) What's your go-to that's very pick-up-and-play? Like, you can play it for a couple of minutes and quit without losing progress and so on? I've been using the Minute series by moitititi, Minute Quest, Minute Dungeon, Minute Frontier. Also, Byte Master is a 2048-alike with idle elements, 2048 Knight which is another 2048-alike but with some RPG elements, and I check in on Clickpocalypse II and Idle Oil Tycoon (which is now starting to take seconds to open so I might be dumping that soon).

Decromancer is fairly similar. You explore a world map, have encounters with baddies, and use cards you collect to fight.

https://play.google.com/store/apps/details?id=com.unit9.decro