pdParticles

pdParticles is a simple, free Playdate particle library created by PossiblyAxolotl.

It's super easy to get started and use to make some nice looking effects. You can see the documentation here to help you out.
You can also see a list of games using pdParticles here.

Make sure to check out the GitHub repo and discussion board there.

This library is completely free so if you get something out of it feel free to donate to it!