[me_me_me]

Premium features.

You can pay to get an extra move or a take-back (only joking).

Actually thinking about it, there probably is a cheap chess clonelike app on mobile market that does that.

[DobryMorozov]

There is! "Chess Online"

[me_me_me]

Oh no. You shattered my remaining slither of hope in mobile app market.

[chaorace]

If you think that's bad, check out this GDC Talk: https://www.youtube.com/watch?v=E8Lhqri8tZk

They procedurally generated 1,500+ different iterations on top of the same Unity-based slots shovelware using noun/adjective pairs. The general success they enjoyed is as sad as it is hilarious. For the record, the most enticing descriptor categories were: "3D", "Luxury", "Casino/Gambling", and "Sexy".

[me_me_me]

Stop it! This is soul crushing... and funny.