First of all, Winzip has nothing to do with Raft.... You can't blame your own misstakes on us and post it as a bug....
Use 7zip or winrar they are free and easy to use.
Listen I was on windows and I tried downloading the one for windows but I had to buy something called win zip to play, so your wrong and please fix it. So I went on my mac be it worked so your windows download for raft Is wrong! So I tried on my MacBook and it works but the water is black anddark so fix it