The video game Portal 2 works better for improving cognitive abilities than Lumosity's brain training games. User Intelligent-Stay-784, in the Psychology subreddit, 06 May 2022
The effects of Portal 2 and Lumosity on cognitive and noncognitive skills User qznc_bot2, in the Hacker News subreddit, 04 Sep 2019
Portal players show greater increase in cognitive abilities than Lumosity users User mr-zool, in the Portal subreddit, 04 Sep 2019
TIL: A study found that subjects who played Portal showed an increase in certain cognitive abilities, whereas subjects who played the "brain training game" Lumosity showed none. User Mynotoar, in the Today I Learned (TIL) subreddit, 04 Sep 2019