Request for plugin

Hi, i'm wanting to make captcha better, it's a few deletes/banns a day atm which is cool, but i'm looking for a plugin with an answer question captcha, i have a another forum (mybb) which uses any question, so i put ..... "spell the whole word xm*s" ....... i get zero bots joining with a more complex word people know.

 

So is there a plugin for this ? if not would someone make one please ? i can pay if needed. 

 

 

 

thank you