Which game shall I buy

I would got atlas you get more content

I would imagine you'd get more for your money out of Atlas than the other two. Are you leaning one way or the other?

It's all based on personal taste and the games variate aswell.

I'd personally would've gone with Hunt Showdown as it's survival horror like with a base of FPS.

These are very distinctive titles.... It depends on your playing style and which "vibe " you are currently in. Personally, I'd go from Hunt Showdown.

I would buy showdown, but look what else you wanted to play, the genre you like best, good luck!