DISCLAIMER:

In 1.20.5, Mojang added the attribute generic.gravity. This allows to directly, modify the gravity experienced by any entity. (The default value is 0.08, so you just have to multiply by that (earth = 1*0.08 = 0.08, mars = 0.08*0.38 = 0.0304, ect...)

Therefore, due to the existence of a vanilla alternative, this mod is now discontinued.

It's still available to donwload.

This mod provides 2 commands:

/gravity <set|get> <value>

Use this command to modify the percentage of Earth gravity. You can put any number you want. Presets for Earth, Moon and Mars.

The normal value is 100, and you can set very high or negative gravity. Be aware that a too big value can crash your game.

If the value is between 4 and -4, the gravity will be disabled and you will freely fly around.

/air_resistance <set|get> <value>

Use this command to modify the percentage of Earth air resistance. You can put any number you want. Presets for Earth, Moon and Venus.

The normal value is 100, and you can set very high or negative air resistance. Be aware that a too big value can crash your game.

If the value is equal to 0, air friction will not slow your fall anymore.

This mod is compatible with:

Up And Down And All Around

Galacticraft

I have no link with any other gravity control mod project.