Through "diffusion", scientists are able to generate a compression a thousand times higher than that of rocket engines. Diffusion engines have a chamber in which the diffusion takes place. During expansion, an empty space develops which counteracts the pressure difference. Thus, in accordance with this reaction principle, a powerful engine is built, which is even capable of getting large cruisers to go at relatively high speeds. The level determines the improvement in the control process during diffusion. The higher it is means that more performance can be obtained from it through diffusion. Every level corresponds to an increase in speed by 10%.