rjbuffchix: At least all the games on there are DRM-free with no need for a client or signing in to receive Rewards for the flagship "DRM-free" game. It is a much smaller scale store than here but there are some classic games available there that aren't on GOG.
samuraigaiden: It's a scam.
They are selling games that have been removed from other stores due to expired licenses or IP disputes, like Duke Nukem 3D Atomic Edition and Race Driver: GRID. One of their people went on record sometime ago saying they'll remove games if the IP owner asks them to, otherwise they'll keep selling them regardless. Being a completely irrelevant store that is almost impossible to google thanks to having the same name as an infinitely more popular chat app, I suspect many of these IP holders don't even know they exist - like most people.
There is a different thread here on the forum that goes in-depth on their shenanigans, if you are interested.
If you decide to buy games there, be sure to back up whatever game you get.
I don't know how does the situation look like with GRID, but in case of Duke Nukem 3D Gearbox is rather aware of the fact that game is sold on Zoom. In fact about 2,5 year ago I've sent email to Gearbox to ask about Zoom and Duke Nukem games in their offer, as I was interested in buying Duke there. Aside from receiving rather standard reply (quoting" We've passed this information along to the members of our Team who specialize in this area and they should be able to take any actions if necessary.") I've received information, that they've closed my inquiry.
Nothing else has happened since that moment. Disclaimer - I didn't do it to make any "nasty surprise" to Zoom, just wanted to be sure if it's legit to buy game here (what is more, guys from "today's" 3D Realms (that company which have taken the name from old 3D Realms) have adviced me to do so).