https://wccftech.com/pubg-early-access-memories-event/

It seems the makers of PlayerUnknown’s Battlegrounds are feeling nostalgic for an earlier, simpler time, when they were still the most popular battle royale game in the word. The latest PUBG limited-time Event Mode, Early Access Memories, aims to recreate the game’s pre-launch rules and feel. So, for instance, the damage you take when in the blue zone doesn’t increase based on your distance from the safe zone, and level-three helmets will still spawn as floor loot.

Here’s the full list of Early Access Memories rules: