A fact from Legacy game appeared on Wikipedia's Main Page in the Did you know column on 3 January 2018 (check views). The text of the entry was as follows:
Did you know... that in a legacy game, players may be instructed to destroy physical components?
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Latest comment: 7 years ago1 comment1 person in discussion
I've added a few more references talking that focus on more legacy games' history/commanalities rather than just mention them in passing when discussing a specific game. th1rt3en.talk.contribs04:15, 11 October 2017 (UTC)Reply
Some other possible sources that talk about Legacy games instead of just individual games:
Latest comment: 5 years ago2 comments2 people in discussion
A legacy game also refers to a video game with a roster comprising all the franchise's characters up to that point. Examples include Mortal Kombat Trilogy, and Armageddonas well as the current Super Smash Brothers. — Preceding unsigned comment added by 142.163.136.41 (talk) 06:41, 12 February 2019 (UTC)Reply
If you have a credible source for this definition, you're welcome to add it to the article. Otherwise, if you think that it deserves an entire article on it's own, you might make an account, and draft it up in your sandbox. Elfabet (talk) 13:29, 12 February 2019 (UTC)Reply