In order to participate in Mortal Kombat 1's beta access, you'll simply need to pre-order a copy of the game on PS5. You can either pre-order physically — although double-check with your retailer to see how it intends to fulfil beta access — or digitally through the PS Store. Everyone who pre-orders the game will be guaranteed access to its beta. You can find Release Date and All Pre-Order Details through the link.