Tipping.

In the Gamer'girl' Cam show there is a bar on the top of the viewer's screen where they can purchase GgC (Gamer 'girl' Credits) in bundles of 1, 5, 10, 20, 50, 100, 500 or 1000 GgC a time.

Gamer'girl' can also gift people with credits but she can only gift each person once per session.

Tipping menu:
10GgC: A picture of Gamer'girl' in a requested pose and outfit. (casual outfit)
20GgC: A picture of Gamer'girl' in a requested pose and outfit. (cosplay outfit, a limited selection is available)
30GgC: A picture of Gamer'girl' in a requested pose and outfit. (sexy outfit.)
25GgC: Truth or Dare. (Give both, one will be chosen.)
50GgC: Storytime. Gamer'girl' will tell a story about one of her latest fantasies.
100GgC: Change location. Gamer'girl' will set her webcam up in a different part of her apartment.
500GgC: Invite. Gamer'girl' will invite someone to join her.
200GgC: placeholder.

Author's note: The idea is that buy and spend credits by mentioning it in your comments on the story chapters. This way the number of credits bought and spent can depend on how much the characters of the readers appreciate Gamer'girl' and how much they are willing and able to spend on her.