You will get access to the .maFile for steam guard and account email (Autoreg).
24 hours warranty
VAC Bans!
Free CS2 (No Prime),
(Can't play these games)
FIFA
FIFA is not playable on steam there will be linked EA account without access to it. Its recommended to buy it with 0 hours played or on EA category.
Call of Duty
Call of Duty games on Steam often has linked battle.net account without access to it, game is still playable but owner may still be able to play at the same time. Its recommended to buy with 0 hours played or on battlenet category.
No Social Club Access
Can't play social club games, GTA, RDR etc... Its recommended to buy it with 0 hours or with social club access or on the social club category.