On the page for Sonic X-treme's development, it talks about the famous factoid of "They used the NiGHTS engine without permission, and Yuji Naka threatened to pull out if they did".
However, that event...didn't happen.
https://twitter.com/nakayuji/status/1545081556019998720
https://info.sonicretro.org/Sonic_Xtreme_FAQ_by_Chris_Senn_(2008-12-23)#ENGINE_questio
Both Yuji Naka and the lead developer of Sonic X-treme itself say they never used the NiGHTS engine proper, with Chris Senn saying they only used an engine that looked similar to it and Naka saying he never shared it at all. As a wiki, this kind of misinformation should be taken off the page for Sonic X-treme (and other pages where relevant), especially since outside of the wiki it is used to damage the public perception of Yuji Naka. I would do it myself, but the paragraphs about it are extensive and could intertwine with true information, so I don't want to delete them blindly.