First, it is essential to understand the timeline. BeamNG.drive entered Early Access on Steam in 2015. Version 0.5.5 was released around late 2016 to early 2017. At the time, this update was revolutionary.
"Igg" refers to IGG-Games.com, a notorious piracy group that repacks commercial games. They have archived old versions of BeamNG.drive. Users looking for a "free" experience often turn here because the official demo on Steam is limited. Igg Beamng Drive V0 5.5 Free Download Mediafire
The official BeamNG.drive tech demo on Steam is essentially a modern, polished version of the old "Gridmap" test. It is legal, safe, and lets you feel the physics for free. First, it is essential to understand the timeline
One of the biggest joys of BeamNG.drive is the mod repository. Version 0.5.5 uses an old file structure (.truck files instead of modern .jbeam JSON formats). 99% of mods on the official repository will not work. You will be stuck with the base, boring 2016 content. At the time, this update was revolutionary
Modern BeamNG.drive requires a powerful CPU (Intel i7/Ryzen 5 or better) and a dedicated GPU. Version 0.5.5 is a "lightweight" shell of the modern game. Players with 2012-era laptops or office PCs find that V0.5.5 runs at 60 FPS where the modern version crashes.
BeamNG.drive frequently goes on sale for 30-50% off. The current price (~$25 USD) is a bargain for a game that has received free updates for nearly a decade.