Entropy is a vertical airflow computer case which uses the natural exhaust direction of up. The large fan pushes the air sides and this is what made the lid possible with only a small opening on the top and bottom. This makes for a sleek and small design which will cool up to 200W TDP (CPU+GPU).
The next generation round mini ITX case from Bottlenext will be horizontal only like a wind tunnel.
This is the last chance to get a vertical Entropy.