91510
I played this game for about 3 or 4 years, it's honestly not worth it. Progression is slow, it's meant to be, "hardcore" but manages to have every aspect dialed down. There's no skill to the game, it's literally just rng on hits, and higher stat + weapon wins. The game becomes so repetitive after a point. Fly, buy stuff, come back, gym prep, fly again, buy stuff, come back, gym, and repeat for 3 years. Seriously not worth your time.
If you're a socialite, you might like it, it has a plenty active community to talk to, but otherwise not fun as a game itself.
There's no sound (with small exceptions here and there) and the top players have stayed on top since they joined, since the game is just a Stat game, most veteran players can and always will have an inherent advantage over everyone else.
The only reason most players stay is to either socialize, or to slowly climb the ladder as a completionist. I can tell you now, it's not worth it. If you want to climb a ladder knowing full well you'll probably never make it to the top, just get a corporate job.
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