[sgrove]

Do you have a link? Sounds like it'd be a very interesting watch.

Edit: I found one that has an example (I think) around 7:38 http://www.nicovideo.jp.am/watch/sm13963118 - the collision detection pushes megaman into the wall and jumps between different sections. Very interesting indeed!

[hkmurakami]

Sorry I think the one I was thinking of was Megaman 2. I did find a link for you. Starts at 2:36. http://www.nicovideo.jp/watch/sm23825129

Also you might be interested in the Final Fantasy 6 memory overwrite bug that was discovered in 2016 as well. It uses the Window Color menu settings as the data reference.

Btw regarding the Megaman 2 RTA, there's an even more ridiculous collision bug being used around 11:30 http://www.nicovideo.jp/watch/sm28321223