Show me 5 all-time top-selling FPS games on Steam ordered by release date.

Of course ! I ' d be happy to help you with that . Here are the top 5 all - time best - s elling first - person shoot er ( F PS ) games on Ste am , ordered by release date : \n 1 . C ounter - St rike : Global Off ensive ( 2 0 1 2 ) - With over 2 0 million copies sold , this game has been a Ste am favorite for years . It ' s a tact ical F PS game that p its teams against each other in compet itive matches . \n 2 . D ota 2 ( 2 0 1 3 ) - This multi player online battle ar ena ( MO BA ) game has sold over 1 0 million copies on Ste am . Play ers comp ete in matches with their chosen hero es , batt ling it out in a vast and complex game world . \n 3 . Player Unknown ' s Battle ground s ( 2 0 1 7 ) - This battle royale game has sold over 7 million copies on Ste am . Play ers drop onto a large map and must sc aven ge for weapons and supplies while fighting to be the last person or team standing . \n 4 . Team Fort ress 2 ( 2 0 0 7 ) - This classic F PS game has sold over 5 million copies on Ste am . Play ers can choose from nine distinct classes , each with their own unique ab ilities and weapons , and comp ete in team - based matches . \n 5 . Half - Life 2 ( 2 0 0 4 ) - This crit ically acc laimed F PS game has sold over 4 million copies on Ste am . Play ers take on the role of Gordon Fre eman , a scient ist who must fight against an al ien invasion and save human ity . \n I hope this information is helpful ! Let me know if you have any other questions . </s>