Because it lacks the heavy textures and complex world generation of modern versions (like 1.20+), 1.5.2 runs incredibly smoothly on older hardware or Chromebooks.
Automatically mutes all game sounds (creeper hisses, block breaking) when the overlay is active. Low-Profile Taskbar: ---- Minecraft 1.5.2 Unblocked
"Unblocked" versions circumvent this by: Because it lacks the heavy textures and complex