Judgment of the General Court (Second Chamber, Extended Composition) of 27 September 2023.#Valve Corporation v European Commission.#Competition – Agreements, decisions and concerted practices – Market for PC video games – Platform – Decision finding an infringement of Article 101 TFEU and Article 53 of the EEA Agreement – Restriction of parallel imports – Concepts of ‘agreement’ and ‘concerted practice’ – Restriction of competition by object – Copyright.#Case T-172/21.