[quote]So my question is if a have Destiny 2 on battle.net (i earn it when it was free) and i would like to tranfer my account on steam. I need to buy it again ? Or Steam/Bungie give an other key and i don't need to buy it again ?[/quote] You can play the free version on Steam on and after Oct 1 with Destiny 2 [url=https://www.bungie.net/7/en/Destiny/NewLight]New Light[/url]. Since you do have a Battle.net account already, it is highly recommended that you set up your account ready for the PC Move, i.e. migrate Battle.net licenses to Steam. This will migrate all your game ownership and character save over. If, however, you wish to access any content you don't yet own, you'll need to purchase it. For example, Forsaken + Current Annual Pass and/or Shadowkeep + New Annual Pass. [quote]And an other question is if i don't do the transfer can i continue to play on battle.net indefinitely or the game will be stoped on battle.net after the deadline ?[/quote] The game will not be available on Battle.net on or after Oct 1. Let me know if you have any other questions.