The services include two fixed odds games channels, Challenge Jackpot and Casino Casino Roulette, promoted alongside Challenge strand The Player Zone.
The interactive specialist has also launched Mobile Zone for Challenge TV, which enables cable viewers, via their red button, to access branded mobile phone games, wallpapers, ringtones and other mobile services.
Two Way will generate its revenue from the services it charges for, including the "pay per play" games on the Challenge games channel, ranging from 60p for a game to£6 for a download on the Mobile Zone. The service is charged on the user's cable bill and revenue will be split between Two Way TV, the two cable channels and NTL.
A fixed-odds channel and roulette channel will also be available on Challenge which allows users to open an account of up to£500 with Two Way TV. Users can also play for free, on a virtual gambling option.
A Bravo-branded fixed odds service will launch in December.