In Wordbase, you have to reach the opponents base not by traversing mountains and flanking opposing forces, but with your words. You'll get there one letter at a time, even if you have to fight dirty. It's a licentious linguistic battle, but no one ever said it'd be pretty.
The game board in Wordbase is essentially a giant word hunt puzzle. However, unlike those games, you can pick out words in any direction and along diagonals – the letters just have to connected to each other in some way.