Pure Sniper：スナイパーゲーム PVP

It's fun, but reading bosses, moving targets, and wind is difficult. Besides your own level, there's also a gun rank, and if it's too low, it's hard to one-shot enemies even in the next area. There's also an interval needed to level up your guns, which makes it less smooth. I could pay, but I didn't, and since I couldn't progress, I uninstalled.