Microsoft planned to acquire Square Enix in ominously titled "Project Phoenix"

techradar.com:

Confidential documents revealed that Microsoft had plans to acquire Square Enix as part of a broader corporate acquisition strategy.

Revealed as part of the ongoing legal battle surrounding Microsoft's proposed acquisition of Activision Blizzard, Microsoft sought to acquire the veteran RPG creator in order to support «future mobile-exclusive Game Pass offerings» (via The Verge). 

These plans were given the foreboding title «Project Phoenix» and were also centered around leveraging ownership of Final Fantasy, Dragon Quest, and Kingdom Hearts to grow Xbox's Japanese audience as well as to capitalize on Square Enix's experience in creating mobile games. 

This is the latest in a string of revelations that have come to light in the wake of the US Federal Trade Commission's (FTC) court case against Microsoft. Many confidential documents have come to light, including internal correspondence planning for the acquisition of a range of other studios, including SEGA and Bungie all with the aim of increasing the reach of Xbox Game Pass.

Microsoft's ongoing efforts to acquire Activision Blizzard have drawn a great deal of scrutiny from government bodies across the world, for fear that the acquisition could allow Microsoft to build a monopoly in the video games industry. In addition to the FTC's ongoing legal battle with Microsoft, the UK's Competition and Markets Authority has outright blocked the deal. 

That said, things are not entirely grim for the tech giant. Not only is Microsoft appealing the UK government's decision, but it also got approval from the Chinese government as well as the European Union. Though the latter did force Microsoft to abide by several caveats, it's clear that the international community is somewhat divided on