This game is super fun. Its a lot like USFIV, but with enough differences to make it fresh. Despite the game playing more like Street Fighter, all the characters feel heavier, especially the tekken cast.
To quell any fears about people buying the game now in 2014.
YES, Games for Windows Live STILL WORKS. The marketplace is dead but the DLC is bought through Steam anyway.
YES, It does work on Windows 8. But you need to do a little work to make it work.
You can also make Offline GFWL profiles, I forget how to do it but you can google it.
On windows 8. It will crash on startup, this is caused by an incompatibility for Windows 8. Uninstall GFWL market and Client. Google GFWL and download the newest client. Right-click and under properties > compatibility set the compatibility mode for windows 7. Run the installer as administrator. The game will now start up with no problems.