“We actually started this game with an idea for a prequel story that we eventually cut,” said Druckmann, responding to a question about material dropped from the game. “However, you’ll get to see that story fleshed out in the upcoming Uncharted Motion Comic.”
And a bit further down, in response to the question “Who’s your favorite Uncharted girl, Chloe or Elena?” Druckmann replied “I’m gonna go with Rika… You’ll meet her in Uncharted: Eye of Indra – the upcoming Motion Comic.”
According to my copy of the Dictionary of Ancient Deities, Indra is the supreme deity in Vedic Hinduism, a storm god and god of the atmosphere (one of his many alternate names, Sahasramuska, apparently means “thousand-testicled one”). No mention of eyes specifically, but among other things, the eye symbolizes the ultimate cosmic power, the ability to simultaneously “create” and “destroy” the universe: Open it and create a world, close it and dash that world to blackness.
Then again, maybe it’ll refer to the “third eye,” the mystical inner eye associated with higher knowledge or consciousness.
What’s a motion comic? A comic book with voiceovers, a musical score, and limited animation of the panels.
Have a look at this Watchmen site for a few examples. You either like this approach or you don’t. I don’t, but then I’m the sort of grumpy old comics guy that’d talk your ears off about the good old days, when we had to read uphill both ways.