It's been an exciting month in mobile gaming, with both Apple and Google announcing (and in Apple's case releasing) bold new subscription gaming services.

As enthralled as we are by Apple Arcade's initial offerings, though, we've already got one eye on the next big thing. Call it an occupational hazard.

There's always something irresistible about those brilliant-looking games that sit tantalisingly out of reach on the release schedule.

In recent years, Apple and Google have offered pre-order systems to help drum up interest in promising new games. We've taken a look at their current pre-registration listings and pulled out six games that iPhone and Android owners should be excited about.