It wasn't that long ago that mobile casino games were a niche market. Hardly anyone played slots on their phones or tablets because the quality of the games were not good enough, and/or connection speeds weren't fast enough when you were out and about.
All that has changed, of course. These days, if you are serious about the web, you have to cater for people on their smartphones, their tablets, their desktops- whatever they choose. Websites have to be fully responsive so that they work on the smaller screens, and games have to be designed with mobile in mind.
Instant play slot games used to run on flash, which doesn't work on most mobile devices (it used to work on Android, but even they gave up on the technology. Apple have never felt the need to accommodate flash website and games on iOS device like iPhones and iPads).
But now, with the switch to html5 games, that problem is receding. You still can't access the entire range of slot sites on your mobile as you can on a desktop- but the more popular games have already migrated across and new games such as the Game of Thrones Slot game have been developed with a "mobile first" philosophy. They worked on phones straight away and were designed with mobile players in mind from the start (where the people play, the casinos have to follow).
Mermaids Millions has always been one of the more popular slot machines around, so I suppose it is no surprise that it was one of the first mobile slots to make it on to mobile casinos using Microgaming software. The bright, vibrant graphics and calming soundtrack are perfect for mobiles, whether you are playing on an iPhone 6, an HTC One (Android) or an HTC One M8 For Windows. Aussie players can play the Mermaids Millions pokie at many of these Microgaming sites (but not all of them).
You want to play Mermaids Millions on your phone or iPad? It's not going to be a problem.