[ukoki]

> lack of automated testing and TDD

Rust has testing in the standard library -- IMHO Bevy is far easier to test than most game engines because it's "just rust". You can test game logic by starting headless apps, proding the ECS, and making assertions on the results.

For acceptance tests I've dusted off cucumber (after ten years of not thinking about BDD), as I it works great with Bevy