This app was mentioned in 11 comments, with an average of 1.18 upvotes
There are plenty of bad games with high ratings but very few good games with low ratings. Going through my library, I found a few decent games with less than 4 stars:
In the unlikely event that Mercenaries Saga2 actually works properly on your device, it's a decent Final Fantasy Tactics clone. I was having fun, but it crashed constantly. Has a 2.7 star rating because it has severe problems on most devices. However, there are a few devices that can actually run it properly; maybe yours is one of them.
Zawia RPG (3.6 stars) is a clone of Inflation RPG (4.6 stars). It has better artwork and similar gameplay. The reason people rated it 3.6 stars is because the gameplay loop is designed such that you can easily burn 30 minutes of time on a single "round" and then end up accomplishing absolutely nothing due to picking an unproductive place to explore or due to poor RNG. This sort of frustration is central to the game's mechanic. Exploration in Zawia RPG is very difficult, but it's very rewarding when it's actually successful. I'm not sure why people like Inflation RPG so much better than Zawia RPG. Regardless, I think it's a lot of fun.
Card City Nights 2 (3.6 stars) is a simple collectible card game. It's nothing particularly special, but it's reasonably fun. Half the bad reviews are due to poor support for certain devices. The other bad reviews are because the gameplay is a too bland.
The Order of the Holy Grail (3.9 stars) is an RPG. The gameplay is fighting only (i.e., no map/exploration). Play is primarily about optimizing equipment and making risk/reward decisions about how deep to explore on each run. Low ratings are because the game is very simple and very repetitive. However, I found it pretty fun for a while.
Mercenary Saga 2 if you like tactics game https://play.google.com/store/apps/details?id=com.rideon.merce_saga2eng&hl=en