Not only is the game a 3d anime hack 'n' slash game, which makes it stand out from most of the gacha games (the usual low-quality 2d turn-based), but it has a unique skill mechanic that could literally be a mobile game on it's own (totally not making fun of a certain mobile game ㄟ( ▔, ▔ )ㄏ). Aside from the auto-attacks, there's a mechanic called the "ping" system, where you basically get different "skill orbs" from time to time, lining up in a row on the screen. You can tap an orb to use the corresponding skill, but if there's three orbs together, it will trigger a stronger skill. Feels familiar now?
With the gameplay, of course, comes the graphics. I really like the combat animations, they look really flashy. Although I'm not a big fan of the art style, I still do like the characters' designs. The chibi figures of the characters in the dorm are really cute as well (=^▽^=).
Now, we can't forget that this game has a gacha system and is therefore, duh, a gacha game. And for every gacha game you probably want to ask this one question: Is it F2P-friendly?
Short answer: Yes.
Long answer: Yeeeeeeeeeeee- ok not funny. Seriously though, since I started playing the game, I've been solo-ing the game with the literal first character you get - the "worst" character according to tier lists. And I don't seem to be struggling at all?!
And even if you do want to gacha for another character, there's a path system to literally guarantee an A-rank character you want within the next 10 rolls. (not 100%, but 80% but tbh you have to be very unlucky to lose). The S-Ranks are a little harder to get, but luckily, there's a pity system that guarantees an S-Rank within 60 rolls. So I can say for sure that this game is very F2P-friendly.
A little more painful is the stamina =_=. If you play regularly, you get to play around 15 easy stages a day, which is ok for casual players like me, but it might not be enough for other players...? The reason I think that might be the case is because usually in gacha games, since I'm a really casual player, I usually just have like 10 times more stamina than the cap (1000/100). But in this game I actually used up all my stamina once! And no, this was not because the game was so amazing I played more than my usual amount (altough it is amazing).
I think other than that, there's not really something worth mentioning anymore. If there's an aspect I didn't mention in this review, then it means that it's "decent": not bad, but not outstanding.
That pretty much sums up my opinion on PGR. If you're tired of the usual turn-based gacha games like I am, I really recommend you to try this game out. (*^ω^*)