The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Happened as dated, per arstechnica.com: "…camera-and-touchpad equipped PS4. “XCOM was announced for the iPad and that kind of stuff is perfect…"
Wikipedia's Civilization Revolution 2 article calls it "a 4X turn-based strategy video game for portable platforms, developed in 2014 by Firaxis Games with Sid Meier as designer" and lists its leaders and four victory conditions.
MacRumors reports 2K released Civilization Revolution 2 on iOS on Wednesday, July 2, 2014, matching the pin's stored date, though the article covers the sequel's actual launch rather than the prior announcement the pin's title references.
Time's Matt Peckham confirms in real time that Civilization Revolution 2 "is available as I'm typing this" on the iOS App Store, dated July 2, 2014, independently corroborating the pin's stored release date.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.