Vague gameplay format is three stages:
1. Opening level
2. Select one robot master stage from the original 8 (maybe some guest appearances?)
3. Score attack round
No Vile, Sigma, or Zero cutscenes. All of it is distilled to gameplay.
...
I guess the closest to that for real would be to just play 30XX's daily seed? Not quite the same format, but it's close enough I think.