How do I install mods on this game?

[ChickenEater445]

I don't know how to download any mods into the game's files

[MiJune]

try using quickbms to extract the games .dat files and work from there, i'm not sure what you could do after that.

[Crystal Sharrd]

https://www.rockraidersunited.com/topic/6593-modding-tt-lego-games-beginners-preparationsetup/
This is the guide I followed.