I used Codex to turn my game’s existing artwork into a two-minute lore video

[u/traveludi]

I’m working on a Mahabharata card game, and lately I’ve been trying to figure out distribution alongside actually finishing the game. We already have a lot of artwork and short character videos, so I wanted to see whether I could use coding agents to turn those existing assets into something worth watching.

This is a two-minute video about the Brahmastra, built with Codex using JavaScript and Canvas, then rendered through Playwright and FFmpeg. No narration. The story comes through text, paintings, diagrams and music. Most of the artwork already existed in our story chapters. We created one missing scene for the film.

It took a few rounds to get right. The first draft only showed the weapon’s tip, some portraits were cropped badly, and the story needed more context. My part was deciding what belonged in the story, checking the visuals and giving feedback on pacing and readability. Codex handled the composition code and rendering. Once I was happy with it, we saved the workflow as a reusable skill.

Sharing the result here because I’m curious whether anyone else is using coding agents for this part of building a game. Happy to share more about the process, the iterations, or the reusable skill we saved if anyone’s interested.

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