This specific version (v0.24.x) was part of the game's around October 2022, well before its official 1.0 release in late 2024.
: At this stage, the demo primarily showcased the core mechanics: scavenging in radioactive wastelands, surviving bandits, and managing inventory in the bunker. ZERO.Sievert.v0.24.2.rar
Finding this specific RAR file online typically points to unofficial sources or archive sites. ZERO Sievert on Steam This specific version (v0