From the few games I've played of this jam so far, this one probably makes the best use of the Penalty theme. I like how despite being given penalties, you still have a choice in which slot you pick.
Visuals look great, especially given the Pico 8 limitations. My only gripe was that sometimes I thought I could stand on a bridge but it was a background element.
The game is challenging (I hit my limit with 5 packages delivered, 0 on my first attempt), but also allows you to choose the amount of challenge to some degree. I like the Yoshi mechanic of losing your mail.
Also the wacky jump + slippery shoes combination is pure evil, lol. Wacky jump threw me off, but usually not in a way that got me a game over. Overall the game has a well executed concept!