Le site zengaming.co est-il sûr ?

The site's legit and actually host arenas for playing. Rewards and giveaways are also legit (I've got one already!), but coin farm for them is slow and it's slightly hard to catch them after you actually farm for them (there are reasons, because they have to refill each week and when they're refilled: they're gone pretty fast, so be quick and not disappointed if you won't make it in time, so you have to wait for refill next week). There's also community board where people can post anything: It's unmoderated and non-stop spammed - Do NOT use any of given links, because mostly they're scams/malware. Although it has problems given above, it's nice way to play a game and get rewarded on Steam by simply playing games, while you don't have to download, bet or pay anything.