Reddit reviews Theatre of the Oppressed

It's like nobody realizes that theatre exists when trying to compare gaming to other media. It was nice seeing a shoutout to commedia, but there's much much more to it than centuries old touring improv acts. Modern day theatre isn't just fourth wall proscenium shit, it's been doing interactive and emergent storytelling and breaking the actor-audience barrier for fifty years at least. Children's theatre in particular has so many tools to use to tell stories and not limit the audience to a traditional authoritarian relationship.

Read the fucking manual and know who Augusto Boal, Bertolt Brecht, Erwin Piscator, Andre Gregory, and Jerzy Grotowski are. There's so much here to learn from. At the very least, watch My Dinner with Andre.

You may be interested in the works of Augusto Boal. He was a theater practitioner who used improvisational techniques to give voice to oppressed peoples. Here is his seminal work, Theater of the Oppressed; it's a good place to start.

This may be related: Amy Seham's Whose Improv Is It Anyway? It talks about improv as the struggles that pertain to women and people of color up to 2001.

Considering modern improv has only existed since about the late 40s, I doubt you're going to find much that relates it directly to colonialism.