Very fun and enjoyable game! I really liked the play on Professor Oak's name
My main critique is that symbols to represent each monster's and move's element would've made it easier to figure out which moves to use, but even without that they were fairly quick to pick up. In that same vein, a guide or instructions menu describing which types are good against what would also help (since, from what I could tell during my playthrough, it relies on pre-existing knowledge and experience with other similar games like Pokemon, for example grass being effective against water).
Aside from those nitpicks though, the game is incredibly well put together and a fun time! Especially when taking into consideration that the art and music were made during a 48-hour jam.