Welcome to the Rigs of Rods Monster Jam group is made for Monster sim website and people that are intresting the game is free and it might say it has a virus but it does not and heres the link and mod links for the website and a tour video how to get it done and multiplayer matchs

http://rigsofrods.org/
Game

http://sim-monsters.com/index.php?/files/
Mod website recomend downloading sim monsters V4 and some maps

https://www.youtube.com/watch?v=93JjFvpq4ms&t=637s
How to download and load them up thank legoboy101 for makeing the video