How do I install it?
You will need a legit version of Battlefield 3 Premium / all DLCs that contain maps (for Reality Mod). You then need to install the Venice Unleashed (VU) client, which is comparable to FiveM for GTA V. VU verifies your ownership of BF3 through Origin before you can start playing. VU does not and never will work with cracked or pirated copies. Reality Mod will be downloaded automatically when you join a server. Detailed instructions can be found here: https://veniceunleashed.net/about
Client download direct link.https://veniceunleashed.net/download
Do not forget to make an account.