While the "v2022.11.19" version likely refers to a specific unofficial update or repack, there are official ways to get free Portal 2 content and academic-style analyses:
: Papers and blog posts often analyze the game's puzzle design and narrative integration, highlighting its high replayability and "perfectly formed" mechanics. Portal 2 Free Download (v2022.11.19)
: A recently released free mod that expands the game's modding potential and includes new community-made maps and mechanics. While the "v2022
: Portal 2 players showed significantly more improvement in problem-solving , spatial skills , and persistence compared to Lumosity players. and persistence compared to Lumosity players.