As Serjent has already mentioned, it is a pity that some slots (mostly from Betsoft) have a minimum bet size of 0.2 mBTC, which is high. Are there any possibilities to lower that (on other sites we can bet on these slots with 0.1 - 0.2$)?
it's because of the provider , I haven't checked betsoft slots but I checked pretty much all pragmatic ones and yeah min bet is usually 0.1-0.2mbtc
but I have also checked these same games in the other bitcoin casinos and same min bet was there as well
the admin said he will contact the providers to change it from mbtc to ubtc ( so maybe main bet becomes 10K sats ) but not sure if they actually do such changes since they are providing other bitcoin casinos as well
as arallmuus suggested , if you switch to the other coins then min bet will be in usd or euros and you can play the games for much cheaper