Can you play with friends on different platforms?
: Users claim it is a "secret biome" added in late patches like 1.4.4.9 or 1.4.5 that spreads across the world like the Corruption. terraria 1.4.4.9 gog
The 1.4.4.x branch introduced:
Modding the GOG version requires specific steps to ensure compatibility: Can you play with friends on different platforms