LYNE is, on the surface, a very straightforward puzzle game.

Presented to you are grids of shapes, and you must link these, triangle-to-triangle, square-to-square, by dragging your finger between them until all the shapes are linked and the level, of which there are hundreds, is over. Complete one set of 25 levels and gain access to the next, harder, set.

It's immediately easy to understand, and taught to you at a steady pace - LYNE never wants to confuse you, or leave you angry and bemused whilst trying to understand a new mechanic. You are given a safe, easy space to get the hang of new concepts before you're thrown into the deep end.

The deep end

And oh, what a deep end. The complexity increases fairly quickly until you're left staring at an array of shapes wondering how the merry hell you're supposed to fit them together - and the onus is always on you, not on the game. You have everything you need to succeed except, perhaps, a fully capable brain.

Nexus points allow you to push multiple colours of line through the same point in space, but have a maximum and a minimum capacity, meaning that you'll be forced to use some creative solutions and complex routes to push your line through it more than once on your way to the end point.

Perfectly-executed

There are, if you fancy trying them, Daily Challenges which offer 50 procedurally generated random grids to test your skills. LYNE will never end. I am okay with this.

The puzzles - though difficult - are fair, and never leave you wallowing in frustration. It's intriguing and calming - the solution to each puzzle comes in a flash of insight accompanied by a wide grin and a palpable burst of satisfaction.

LYNE is well-designed and smooth-looking, and it sounds great. You should buy this game.