Every week, Pocket Gamer sister site iPhone Quality Index (iPhone Qi) highlights the newest games to make a critical splash in the cool, seductive waters of the iPhone pool.

Grabbing scores and opinions from all corners of the web, including from 148Apps, AppGamer, and iPlayApps, Qi answers all your iPhone-related questions before you've even asked them.

Today, we're going to focus on two new contenders vying to be crowned king of your iPhone. Both are worthy, but do they have what it takes to win your head, your heart, and your wallet?

Reach for the stars

Blasting onto this week's iPhone Qi Top 10 is the latest instalment in Kairosoft's mobile management series: Epic Astro Story.

Never afraid to aim high with its portable titles, the developer of Game Dev Story and Grand Prix Story has applied its tried-and-tested strategy formula to the theme of galactic colonisation this time around.

Consisting of two parts resource farming to one part exploration, Epic Astro Story challenges you to build up a thriving city while simultaneously searching the planet for new plots of land to annex.

Unsurprisingly, Kairosoft's newest pound of iPhone crack has proved a critical hit, with Pocket Gamer's reviewer warning that it "sucks up your time like a Dyson fresh off the production line".

Cellular levels

Meanwhile, inventive RTS game Amoebattle is successfully waging a microscopic war on its Qi competition.

Doing away with the gunmetal mechs and historical settings we often associate with the genre, Grab Games has opted to put you in charge of a group of tiny alien organisms fighting for survival in a colourful but hostile landscape.

Rather than 'building' troops, you must mutate and replicate your miniature fighting force, allowing you to - literally - divide and conquer.

The folks over at Gamezebo found Amoebattle the perfect antidote to poorly implemented real-time strategy conversions, calling this iPhone original "a true gem of a title".

You can get the up-to-date information about which games are reviewing best over at the iPhone Quality Index.