I think we need to separate between both of Wincoin and Windice coin, so it will not misleading people.
Wincoin (with hexagonal style) is an altcoin and has been abandoned from the developer, it's worthless and can't be used for anything.

While this is Windice coin (some people call it Wincoin too) is a coin created/provided by Windice and it worthless too since can't be exchanges. But it can be used to test a game from windice and they has a contest of owning the highest windice coin (as stated above).

Nice clarification mate because on reading up above discussions where they do mention about Wincoin which is having that ticker name WC and windice is having that WIN
and also it isnt really listed nor being traded or just simply a coin which can be only used on gambling site just like with other some gambling sites that they do have
their own dedicated coin which cant really be traded outside but you can make use this for some perks and stat points or whatsoever.