Episodic games do not display all titles in the series/story
If a title is listed as an Episode (a game that continues a core story released in stages and/or uses the same game save data), it does not list the other Episodes in the series as Bundles or Expansions do. Currently, you can only link to a single title, and there is no means of stepping to the previous or next Episode.
a) .hack//Infection Part 1, .hack//Mutation Part 2, .hack//Outbreak Part 3, .hack//Quarantine Part 4
b) Virtually all Telltale games.
This is actually in the backlog and already prioritised.
We’re looking at implementing a fresh way of displaying Additional Content on game pages, which would include Episodes.