This is a great concept for a clicker game. The "infinite monkeys on infinite typewriters" adage lends itself perfectly to this sort of game. The number of monkeys increases, and the prompts get longer, but I wonder how else the game could incorporate the theme. Maybe you could hire bigger monkeys, or maybe different types of monkeys could type longer/shorter words, etc. Of course, clickers can potentially go on forever with a million different upgrade tiers, so there's a lot of room for this game to expand.
The sprites and animations are really cute, and the upgrade descriptions are funny! While the sounds help identify when a new word appears, I kind of wish that valid words that you have already collected would be a different color, like blue or at least a darker/less saturated green.
Everything seemed to work fine for me except for the tier two upgrades. Maybe it's because I'm playing on Windows?