You might run into copyright / trademark issues if you use the name 'Scrabble' anywhere though, FYI

Correct, but I can call it Crossword Game or something like that. The issue is that the word list may or may not be copyrighted (http://www.slate.com/articles/life/gaming/2014/09/major_scra...), and that if I use the exact same tile distribution and board configuration I can still be sued. Hell, Hasbro could still C&D if they wanted to even if I'm not infringing at all. But there is no body that owns chess.

Take the existing list and add a sixteen-character word to it.