MemZee displays randomly generated numbers of a specified length for a specified duration and challenges you to type in the number from memory. Longer numbers and shorter durations increase the maximum possible points for each game. Trophies are awarded starting at the 400 point level and approximately every 200 (i.e. 600, 800, etc) points thereafter.
You can also enter your own list of numbers to be displayed in the game preceded by a brief description to help you memorize frequently used numbers such as phone numbers, zip codes, ip addresses and house numbers.