Beyond Oxygen
The Beyond Oxygen mod introduces a functional space sealing system in Minecraft for creating oxygenated zones. Amazingly, this system is fully compatible with the Valkyrien Skies mod!
Key features include the ability to create working submarines (more precisely, almost fully functional submarines). You'll be able to fill special tanks with liquid oxygen, use JEI to view recipes, and pump liquid oxygen through ventilation blocks to PRESSURIZE AN AREA! THE FUTURE IS NOW!
To configure dimensions where breathing is impossible, simply add them to the configuration file. The mod can be freely used in modpacks! If you need configuration for Starlance, use the following code:
unbreathableDimensions = ["cosmos:alpha_system", "cosmos:b_1400_centauri", "cosmos:earth_moon", "cosmos:europa_lands", "cosmos:gaia_bh_1", "cosmos:glacio_lands", "cosmos:jupiterlands", "cosmos:j_1407blands", "cosmos:j_1900", "cosmos:marslands", "cosmos:mercury_wasteland", "cosmos:neptune_lands", "cosmos:plutowastelands", "cosmos:saturn_lands", "cosmos:solar_system", "cosmos:uranus_lands", "cosmos:venuslands"]