VoidLine is a void survival server with a semi-anarchy feel, set in a world made of nothing but empty space. You survive by making the most of what you can get, with random items dropping every 20 seconds to keep things moving and a constant sense that you have to adapt fast.
KeepInventory is enabled in the Overworld and Nether, which makes it a little less punishing while still keeping the chaos and survival pressure. It supports both Java and Bedrock players, so friends on different editions can join in without worrying about platform differences.
If you want something weird, simple, and a bit chaotic rather than a normal survival world, VoidLine leans hard into that void-survival style. Current version is 1.21.11.