26. Monument Valley ($3.99/£2.49)
In Monument Valley, you journey through delightful Escher-like landscapes, manipulating the very architecture to build impossible paths along which to explore. It's not the most challenging of games (nor does it have the most coherent of storylines), but each scene is a gorgeous and mesmerising bite-sized experience that showcases how important great craft is in the best iOS titles.
27. Need For Speed Most Wanted ($6.99/£2.99)
Racing games are all very well, but too many aim for simulation rather than evoking the glorious feeling of speeding along like a maniac. Most Wanted absolutely nails the fun side of arcade racing, and is reminiscent of classic console title OutRun 2 in enabling you to drift effortlessly for miles. Add to that varied city streets on which to best rivals and avoid (or smash) the cops, and you've got a tremendous iOS racer.
28. Osmos HD ($4.99/£2.99)
This superb arcade puzzler is at times microscopic and at others galactic in nature, as you use the power of physics and time to move your 'mote' about. Some levels in Osmos are primordial soup, the mote propelled by ejecting bits of itself, all the while aiming to absorb everything around it. Elsewhere, motes circle sun-like 'Attractors', and your challenge becomes one of understanding the intersecting trajectories of orbital paths.
29. Pinball Arcade ($0.99/69p)
The iPhone's a bit small for pinball, but the larger iPad screen is perfect for a bit of ball-spanging. Pinball Arcade is the go-to app for realistic pinball, because it lovingly and accurately recreates a huge number of classic tables. Tales of the Arabian Nights is bundled for free, and the likes of Twilight Zone, Black Knight, Bride of PinBot and Star Trek: The Next Generation are available via in-app purchase.