Capital letters in 'a guess the word(s)' game? Big faux-pas man, caps shouldn't matter at all. In fact, it might be misconstrued as a purposely bad game, that requires you watch the walkthrough to be able to finish it, since the variables are so high. Adding more correct answers, would certainly help, I'm not asking you to make this an easy game, just more accessible and forgiving of wording, in both languages.
In the future, I'd suggest you use the Project Manager here to beta test your upcoming games. Inviting a few members of the site to work out the bugs, would go a long way towards improving the content of your games, and your reputation as a professional who does whatever it takes to make a solid, stand-alone product.
I'm telling you this as a friend, because I know you mean well, I've been a fan of yours for quite a while now, and you deserve my unvarnished opinion... that's what friends do.