F2P's Take on Nier Reincarnation at Launch, If you need a quick one liner to make or break the game for you, here it is: "Its basically a PS2 turn based RPG produced by Yoko Taro with all the normal gacha features."
Nier Reincarnation (Nier Rein) is your typical mobile gacha game. The game is free to download and free to play. The gacha and stamina systems are what keeps the servers, etc. running. What differentiates Nier Rein from most other gachas is that you are not pulling for units per se.