DERP! Yeah it seems so , I just stumbled upon the game first and later the wiki that’s why I thought game came first then expanded feeding on its wiki.
Anyway reading the licence shows coast is clear to do anything as long as it stays free, It can also sell if you can workaround legal ******** and still then cc wont allow you to enforce any copyright on derivative work on some of the content e.g. the scp-173.
So a free game is a full go without problem with proper credits given to wiki.