From the ANN:
Play Go and mine your tokens on proof-of-PLAY basis. Generate one token every 20 seconds.
As I understand it, you can earn 1 token every 20 seconds you spend playing their online game, for a maximum of 3 hours a night and this runs for 30 days. Lets figure out how many tokens an individual could get if they did the maximums.
Lets convert tokens/seconds into total tokens/airdrop using the info in the ANN:
1 token 60 seconds 60 minutes 3 hours 30 days
------------------- x ------------------------ x --------------------- x --------------------- x -----------------------------
20 seconds 1 minute 1 hour 1 day "airdrop" period
Multiply across the top and bottom and remove cancelled out units and we get:
16200 tokens
-------------------------------
"airdrop" period
Or simply put, you can get 16200 tokens for free if you spend time on their website(app?) playing the game called 'Go'.
To get this many tokens it would require that you play for 3 hours each evening (the max allowed) for the entire "airdrop" period of 30 days which starts September 27, 2017.
And I didnt count the days between start and end dates and I'm assumimg it's 30. Also I am assuming all that is required is to play (win or lose), and also that you are allowed to play nonstop for the 3 hours per day that play is allowed.