Such games have Random Number Generators (RNGs) that ensure fairness in each spin.
https://www.ww2.site/forum/viewtopic.php?t=392826
https://planeswalkers.org/viewtopic.php?t=74027
https://www.ww2.site/forum/viewtopic.php?t=17771
http://www.lada-xray.net/showthread.php?p=322568#post322568
https://www.ww2.site/forum/viewtopic.php?t=427669
http://60.250.226.63/ipkb/viewtopic.php?f=41&t=1957990
https://phantom.everburninglight.org/archbbs/viewtopic.php?pid=731757#p731757
https://67farms.st/viewtopic.php?t=5204
https://muchroom.ng/index.php?topic=33105.new#new
http://vortex.mx.free.fr/forum/viewtopic.php?f=38&t=1616&sid=6939db2c841709a14a52f6df7cb3b46d
http://myweed.rocks/viewtopic.php?t=71153