While the version numbering suggests a minor patch—a mere hop from v0.9.9—players familiar with Rose Games know that these decimals often carry significant weight. v0.9.91 isn't just a bug fix; it is a comprehensive refinement of the game’s core loop, economy, and narrative pacing.
Gone are the static save points. In v0991, checkpoints exist in a state of flux. You have 3 seconds to touch the floating crystal after activating it. If you miss, the checkpoint de-syncs, and you revert to the previous universe layer. This "active saving" mechanic is divisive among purists but is now the hallmark of design.