The Wharties play an old-school science-fantasy RPG, by Daniel Proctor and Ryan Denison
Session 1: It Doesn’t Say I Can Control It: In the grim post-apocalyptic future, there are only mutants. At least in this party. (Gameplay starts about 64 minutes in.)
Session 2: Cocksure Homo Erectus: A fight, a fight. (Not an Edible Plant.)
Session 3: A Distinctly Non-Trademarked Name: Area Effect Attacks and You, A Case Study

If you do a sequel to this campaign, you could try a slight variation:
