"Luminosity" is an arcade game set in space, often confused with Lumosity, the brain-training website. Some free brain-training activities are available through sign-up on Lumosity.com
Users must sign up for a free account on Lumosity. Sign-up consists of entering personal details, such as name and date of birth, and answering questions about what the user wants to learn or improve. Some of these areas are memory, recall, quick decision-making and mental arithmetic.
Lumosity provides some free games and activities for brain-training, but Lumosity's full activity and test collection can only be accessed through purchase of a subscription. As of 2015, subcription options are monthly, one-year, two-year and lifetime.