Short question: What casino has the widest multiplatform and the most complete set of slots?
That's actually two separate questions
In terms of wide multiplatforms here is what I have in my db for the Top 5:
Maria Casino 25 total software providers
Unibet Casino 25 total software providers
Betsson Casino 24 total software providers
Betfair Casino 23 total software providers
Carat Casino 22 total software providers
In terms of the number of different slots I have counted:
CasinoLuck 548 slots by 8 providers
NextCasino 505 slots by 6 providers
Club Gold Casino 433 slots by 4 providers
7 Sultans Casino 419 slots by 1 provider
Emu Casino 397 slots by 7 providers
The second set has a limitation in it: I only counted slots for the instant play versions, if you also look at downloadable games too you will get higher numbers, but there is in overlap (same games present in download and instant play versions).
Dont have to be accredited, but I do hope it is
Interestingly enough, most of them are accredited or at least not rogue. Crooks typically don't bother putting a wide selection of games from multiple producers.