This game has really amazing graphics and an arcade control style feeling. The monsters are massive, which is awesome. This game doesnt require a lot of time compared to other dungeon hunter games. Each game you play is only a few minutes max, which is great. However, it offers the complexity of leveling up heros in multiple ways, collect gear, level up gear, promote heros, etc.
This is a very good game everyone who consider his or herself a gamer, should try for at least a few days, just to play some bosses. Free to play this game is fine.
The only downside is that this game currently has a small player base, which is really remarkable given this jewel of gameloft. I play this on a iPhone xs max, which really improves the experience. Really think you require a good phone, and that the player base is therefore small, and that this game is a little ahead of its time in that context.