Nie jest to wyłącznie wymysł kasyna, ale także wymaganie stawiane przez regulatora hazardowego.
https://debate.socialism.nl/forum/showthread.php?tid=303533
http://1.s.2.free.fr/viewtopic.php?f=17&t=563798
http://frmklas.com.tr/threads/jak-wygrac-duze-pieniadze-na-automatach-online-gry-automaty-hazardowe-online.15798/
https://planeswalkers.org/viewtopic.php?t=33432
http://www.lada-xray.net/showthread.php?p=126228#post126228
http://horsecity.ru/phpBB3/viewtopic.php?f=8&t=428322
http://myweed.rocks/viewtopic.php?t=30252
http://frmklas.com.tr/threads/gry-automaty-kasyno-tez-casino-polska.96753/
http://miweii.com/forum.php?mod=viewthread&tid=28267&extra=
http://47.88.101.141/forum.php?mod=viewthread&tid=460033&extra=
https://forum.zweb-apps.xyz/viewtopic.php?t=17335
http://www.lada-xray.net/showthread.php?p=277717#post277717
https://forum.zweb-apps.xyz/viewtopic.php?t=16606
https://catrachosporelmundo.com/index.php?topic=12531.msg12997#msg12997
https://planeswalkers.org/viewtopic.php?t=28301
http://47.88.101.141/forum.php?mod=viewthread&tid=245053&extra=
http://47.88.101.141/forum.php?mod=viewthread&tid=326068&extra=
http://178.210.82.182/forum/administration/64246-czy-warto-gra-w-kasynie-internetowym-maszyny-kasyno-online
https://my-mobile.eu/viewtopic.php?t=15700