I second pragmatic play. As a casual player, I find the slots there way better than others like netent or play'n gO. Their games are always fun with great themes and smooth graphics. Slots like wolf gold and dog house are my favorites because they seem to pay out pretty often. Plus, they work really well on my phone without any issues. Compared to some other slots, pragmatic feels more exciting and rewarding, and I always look forward to playing their new releases!