Biosphere is on the worse end of how good a movie could’ve been with its premise and cast. 

Diagnosing its shortcomings can make for a fruitful watch, but most of the fruit comes from the sheer delight of the bananas premise’s unfolding, and how the actors handle it.

Also, it’s an Essential Text in the Mark Duplass Cinematic Experience; he and his bro have been making Covid movies since before Covid.