GI.biz reports a complaint to the Advertising Standards Authority in the UK by a Reddit user triggered Sega to make amends in order to avoid a formal investigation.
"Sega Europe acknowledged your objection that the trailers did not accurately reflect the final content of the game," Niall McVeigh, complaints executive at the Advertising Standards Authority wrote. "[Sega] agreed to add a disclaimer, both on their website and in all relevant YouTube videos, which explains that the trailers depict footage of the demo versions of the game. The disclaimer will be visible when each online trailer is played."
According to the ASA website, the organization received four complaints. It's widely known now that Sega and developer Gearbox Software misled the press and public with inaccurate demonstrations of Aliens: Colonial Marines for years. The game currently stands as one of the worst reviewed titles of 2013.