If there's one defining gameplay feature that can save any mobile game, it's one-thumb play.
The platform has matured a lot in recent months, but there's still no substitute for the ease of entertainment that comes from being able to play a game while walking down the street, standing on the train or surreptitiously having a go under the table while you're supposed to be listening to a Health & Safety presentation.
But it takes a specific type of game that can handle one-thumb controls - games like Tumblebugs, which, despite its sickeningly cute name, captures the vital essence of mobile gaming.
You'll probably note right from the start that it's a Zuma clone, and to be honest the developer doesn't bother to hide that fact, so much as embrace it. And that's fine, as far as this reviewer is concerned, as long as that clone still makes an effort to forge itself an identity alongside the familiar gameplay - which Tumblebugs certainly does.
The premise revolves around a line of bugs attempting to follow a winding route around the garden and bury themselves in the hole at the end. By shooting more coloured bugs into the rolling train of spherical insects, you aim to create lines of three or more to eliminate them from the string and slow the procession.