Changes

* Contrary to what might be expected, the ''Tag Force'' video games seem to treat negative Levels identically to positive Levels in some ways. For example, it is possible to use a Level 5 monster(s) and a Level -5 monster(s) as [[Xyz Material]]s to [[Xyz Summon]] a [[Rank]] 5 [[Xyz Monster]].<ref>{{cite web | url = http://www.youtube.com/watch?v=pWEPnravn7E&t=3m7s| title = <nowiki>Yu-Gi-Oh! Tag Force 6 Dark Synchro Xyz vs Vizor | YouTube</nowiki> | date = October 13, 2011 | accessdate = May 30, 2017}}</ref>