£70m was staked on fixed-odds roulette machines in Exeter betting shops last year.
The Campaign for Fairer Gambling, which published the figures, is especially concerned about the effect on younger people, and the rise in use in both poor and affluent areas.
They've been described as the 'crack cocaine' of gambling because up to £100 can be spent every twenty seconds.
Young voices barely registered in devolution consultation
Only eight people under the age of 24 registered a view
Energetic Pretty Woman is a must-see
REVIEW: Pretty Woman The Musical
Devoncast - Police and Crime Commissioner election special
Devoncast is back with the latest from around the county
New pledge on South Hams Freeport funding
'It is taxpayers’ money, but that money is being spent in the South Hams'
Axminster children connect with space station
Space cadets link live with astronaut
East Devon should get new CEO
Local Government Association recommends new boss
