games which require airtime

Archived from groups: alt.cellular.verizon (More info?)

I've noticed that there are GetItNow games that state "Airtime required
for use" but which don't seem to have any obvious functionality that
would require airtime. Zuma is one I recall but there are others too.
Do these games require airtime all the time while you're playing them or
only for special features?

Thanks,
Mark