Why moderators still allow to give away this game(delete this game!)

I believe it's because BundleBlitz does GA's for it here as well.

its free game no matter this game must be banned here

It's actually incredibly stupid for anyone else to do GA's of it because the CV gained is so pathetically low yet the blacklisting is gonna be brutal for them. shakes head

Because Support is made of humans that might not have noticed the free giveaway, even with a topic. I never saw that topic until now. Same can happen with them.

View attached image.

I don't think you realise this is not on purpose and was simply missed. Just disabled it.

Also,

I have created many tickets, but support is stiil keeping silence

Firstly, User Reports do not allow commenting. You will not receive responses for these tickets.
Also, in general, when these free games are given away, you don't have to report every single user separately but just inform support that it's given away for free so it can be disabled and the giveaways can be tracked. This way you get the same result without spamming reports.

Closing.