Build 71288 represented a "Living Large" style update that synchronized the original game with its sequel's codebase.

The legend of 71288 suggests that entering this seed spawns the player into a version of Planet 4546B that is fundamentally "wrong." Unlike the standard experience, where the game guides you from the Shallows to the deeper zones, the 71288 seed is rumored to generate a world of glitches, impossible terrain, and unnerving silence.

If you are planning a heavily modded playthrough, in Steam immediately after successfully reverting to 71288. This prevents the game from accidentally moving to a newer build that might corrupt your modded world.

If your game has auto-updated to a newer version on Steam, you can typically revert using the Steam Beta Tab: Right-click in your Steam Library. Select Properties > Betas .