Astro Bot: How to successfully dunk a basketball in Construction Derby

In real life, you dunk a basketball by standing close to the hoop, jumping, and hoping for the best (unless you’re actually good). For Astro Bot, you need need to perform a certain action to dunk a basketball for the “Um Jammer Slammy” trophy.

The Astro Bot trophy list is very versatile, requiring you to take a picture at a Photo Spot and even dance with 100 Bots at the Crash Site. The far-reaching trophy list is sure to take you on a journey, and one of the first trophies you can obtain is “Um Jammer Slammy.”

Its title takes obvious inspiration from Um Jammer Lammy—a 1999 spin-off of the classic PaRappa The Rapper—but the trophy requires no Les Paul and more basketball.

How to complete the Um Jammer Slammy trophy in Astro Bot

You need to score a dunk in the Construction Derby level by finding the loose basketballs and hitting them into the net with good alignment to earn the “Um Jammer Lammy” trophy.

It’s a case of you having a bit of persistence and the desire to explore to earn this trophy; there’s no extravagant mini-game attached to this achievement.

To make the trophy easier and simpler to understand, here are handy steps to follow:

1. Enter the Construction Derby level.
2. Progress through the linear path until you obtain the dog jetpack ability.
3. Smash through the panes of glass to reach an area with enemies and paint cans.
4. Get rid of the enemies first, and smash open the box under the platform featuring the ladder—a bunch of basketballs spill out.
5. Approach any ball a decent distance from the hoop and try to make sure Astro is lined up in the middle of the ball, with the ball in line with the hoop.
6. Press Square to hit the ball, and if you’re lucky, the ball goes straight into the hoop.
7. This gives you a few coins (and an additional coin each time you do it) along with the trophy!

We’ve even provided a visual example if you can’t quite get the timing or angles nailed down properly. And no, this “dunk” isn’t like the ones you’ll see Lebron James pulling off.

There isn’t an exact science to the ball going in. There are no on-screen prompts or meters to charge up, so don’t get too frustrated if it won’t go in. Patience is key, and a trophy awaits once you manage to do it.

For more on Astro Bot, read how to find all gold secret exit locations, as well as every raven location in Bot of War.