É permitido "doação" de keys Steam aqui?

Tenho vários jogos que ativam na Steam. Se for interesse, posso postar aqui pro pessoal.

Segue a lista:

• Battle Chef Brigade
• Borderlands 2 + algumas dlcs
• Borderlands: Game of the Year Edition
• Citizens of Earth
• DmC: Devil May Cry
• Getting Over It with Bennett Foddy
• GoNNER
• Grim Fandango Remastered
• Hand of Fate
• Interplanetary: Enhanced Edition
• Kingdom: New Lands
• Lumino City
• Operation Flashpoint: Dragon Rising
• Overlord II
• Pillars of Eternity
• Portal Knights
• Project Highrise
• Project Warlock
• Remember Me
• Resident Evil 4 (2005)
• Resident Evil Revelations
• Screencheat
• Sonic Adventure 2
• Sonic Generations Collection
• Strider
• Tesla Effect: A Tex Murphy Adventure
• Tower of Guns
• Warhammer: End Times – Vermintide
• Wuppo
• Zeno Clash 2