Typing sound effect is very satisfying. Some small things like upgrades being replaced with the next one instead of each being separate on the long list would be nice, and the fact when you're typing a word the gnomes sometimes type what you were about to. These would be nice to design around. Once you get it going though it's nice watching all the words fall down and get eaten up! It's such a good idea making an incremental game out of something as simple as this.