The iPhone, iPad, and Android Quality Indexes boast over 650,000 reviews (in total) from websites like 148Apps, Pocket Gamer, and Gamezebo, and use a unique metric to create a single definitive score for each iOS and Android title.
We got 94 Seconds to go, we got 94 Seconds...
In the May iPhone Qi game chart (and, indeed, the iPad Qi game chart), Scimob takes the top slot with 94 Seconds, its winning combination of online social play and quick-fire general knowledge.
Speaking of online social play, Zynga's back with Draw Something 2.
We can't tell whether this will be as massive as the first game, but the thoughtfully executed enhancements mean that it certainly deserves to be.
Qi's Top 10 iPhone games of May 2013
| Pos. | Game | Qi rating | Reviews |
| 1 | 94 Seconds | 8.9 | 3 |
| 2 | Draw Something 2 | 8.8 | 6 |
| 3 | Quell Memento | 8.7 | 4 |
| 4 | Sid Meier's Ace Patrol | 8.6 | 9 |
| 5 | Sorcery! | 8.6 | 9 |
| 6 | Icomania | 8.6 | 3 |
| 7 | Warhammer Quest | 8.5 | 4 |
| 8 | Mosaique | 8.5 | 3 |
| 9 | Lego Batman: DC Super Heroes | 8.3 | 9 |
| 10 | Can Knockdown 3 | 8.3 | 8 |
At #3 on the iPad Qi game chart this month is Ace Patrol, the latest title from the undisputed king of strategy, Sid Meier.
We knew Mr Meier could handle formidably deep PC strategy epics, but it seems he can distill his tactical essence into punchy mobile form, too.
And on the subject of mobile alchemy, Sorcery! takes fourth position this month. Such a beguiling storybook adventure. Magic, I tell thee.
Finally, at #9, we have Frozen Synapse, the much-anticipated conversion of the modern PC strategy game masterpiece.
The main feature here is a turn-based multiplayer mode that enables you to play against living breathing PC gamers. Yikes.
Qi's Top 10 iPad games of May 2013
| Pos. | Game | Qi rating | Reviews |
| 1 | 94 Seconds | 8.9 | 3 |
| 2 | Quell Memento | 8.7 | 4 |
| 3 | Sid Meier's Ace Patrol | 8.6 | 9 |
| 4 | Sorcery! | 8.6 | 9 |
| 5 | Icomania | 8.6 | 3 |
| 6 | Warhammer Quest | 8.5 | 4 |
| 7 | Go Home Dinosaurs | 8.5 | 4 |
| 8 | Mosaique | 8.5 | 3 |
| 9 | Frozen Synapse | 8.4 | 10 |
| 10 | Lego Batman: DC Super Heroes | 8.3 | 9 |
Taking the top spot in May's Android Qi game chart is Sonic The Hedgehog, the highly anticipated 'droid conversion of the Sega platformer that defined the 16-bit era.
(Well, there was also that game with the fat Italian plumber, but never mind about that.)
Down at #8, Lonely Few manages to deliver some style and freshness to the saturated puzzle genre with Blendoku. No mean feat.
Following closely behind that is Survivalcraft. Take the aesthetic and core creative principle of Minecraft and add a new attritional edge.
Yep, that's precisely what Survivalcraft, err, crafter Candy Rufus Games did.
Finally, Bonds of the Skies is yet another impeccably executed JRPG from Kemco. You know the score: explore, battle, level-up, and follow the heavily clichéd plot.
Qi's Top 10 Android games of May 2013
| Pos. | Game | Qi rating | Reviews |
| 1 | Sonic The Hedgehog | 9.0 | 3 |
| 2 | Fruit Cocktail Slot Machine HD | 8.9 | 3 |
| 3 | New York Slot Machine HD | 8.6 | 3 |
| 4 | Pharaons Gold | 8.6 | 3 |
| 5 | Atlantic City Slot Machine HD | 8.4 | 3 |
| 6 | Las Vegas Slot Machine HD | 8.4 | 3 |
| 7 | Happy Poo's Revenge | 8.0 | 3 |
| 8 | Blendoku | 7.9 | 3 |
| 9 | Survivalcraft | 7.8 | 4 |
| 10 | RPG Bonds of the Skies | 7.1 | 3 |
N.B. While we only display the average score to one decimal place, the lists are generated to further significant figures. We just don't show them all.
And, naturally, these are static graphs based on live listings which are subject to constant change as new releases and reviews emerge.
In order to provide a regular marker of the critical zeitgeist, however, we will continue to round up the best of the iOS and Android games released each month to provide the definitive Quality Index top tens.
iPhone Qi / iPad Qi / Android Qi
