Age of Steam: Human Body 5p Teaching, Play-through, & Round table by Heavy Cardboard

About Age of Steam Expansion: Human Body/Synapses, from BoardGameGeek:

The second pair of the AoS Team 2015 releases. When the first map takes place in the human body with two cycles of O₂ and CO₂; the organs are becoming blue or red, changing the players' strategies. The second map takes place in the brain with synapses. ONLY for experienced players!