games on cartoon network tv - free to play?

[Tigi]

Does anyone know if they are free? ds wants to play ben10.
All of the ganes come up in a row, but only one has 'free' above it, but when i go into a non-free signed one, there is no mention of a charge.. This is on sky. ta

some are and some you pay for but it tells you first and you have to put your pin in

thanks - it didnt ask for pin though, and let him play even though didn't say 'free' over it.