Subnautica 2 (Pre-order)

Subnautica 2 has cemented its place as Steam's fastest-selling 2026 game, achieving an astounding 2 million copies sold within just 12 hours of its Early Access launch the following week. This incredible performance was foreshadowed by its strong pre-orders in Week 20, demonstrating significant player anticipation. The survival sequel from Unknown Worlds has set a new benchmark, selling 50% faster than the previous record holder for a survival title in its initial Early Access period. This rapid adoption highlights the franchise's enduring popularity and the successful execution of its Early Access strategy, pulling in a massive player base right out of the gate.