It's a mirror site. Nothing to worry about.
IMPORTANT NEWS!
Dear windicers, due to technical issues, some of our players may have difficulties with accessing our mirror windice1.io.
The problem will go away within the next day. Hope for understanding.
We also remind you that the weekly challenge Virus Appreciation Day has started yesterday with a prize pool of 0.02 BTC - try your luck right now!
https://forum.windice.io/threads/0-02btc-weekly-challenge-virus-appreciation-day.1258/ Good finding. So there is no problem with windice1.io , Yes, it's normal to being couple of minor sites for any website. But it always should be declared officially. windice also done but my bad I did not do any dip investigation.
* Since it's clear that windice1.io is the minor site of real windice.io then I don't think this topic should be run more. So it is locked.