Many players seek out specific versions like 20.6 because certain "Overhaul" mods (like Darkness Falls or Undead Legacy ) were specifically designed for that build and may not work on newer versions.
The main 7DaysToDie.exe used to launch the game. 7 Days to Die Alpha 20.6.rar
A folder containing the runtime files for the game's engine (Unity). Many players seek out specific versions like 20
A standard installation folder for this version usually contains: 7 Days to Die Alpha 20.6.rar