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| id | key | text | Comment |
|---|---|---|---|
| 1 | is sequel | The game continues the story of the linked game, i.e. it directly refers to the events of it, and develops the further events based on it. | |
| 2 | is prequel | The game explains what happened story-wise before the linked game, i.e. it tells the story that led up to the events of it. | |
| 3 | is side story | The game fleshes out a story that the linked game just mentioned in some, more or less, short way, but didn't explore deeper. | |
| 4 | is successor | The game is marketed as a follow-up release to the linked game within a game series, i.e. Final Fantasy II is a successor to Final Fantasy I. | |
| 5 | is add-on | The game entry is an add-on / patch / mod to the linked game, i.e. can't be played without it. | |
| 6 | is episode of | Episodic games get a "mother" entry at game level, and separate "child" entries for all the episodes. The connection between children and mother is done with this relationship. If there's releases in the form of franchise-->season–>episode, we could probably also do that with a nested "is episode of"-relationship, i.e. the season entries become children of the franchise entry, and the episode entries become children of the season entry. | |
| 7 | is based on | The game is a clone / remake of thelinked the linked game, but somehow broke the different game criteria. This is especially useful for freeware clones of successful games like Tetris, BreaoutBreakout, etc.. If there will be a superior genre classification system later on, this relationship may become obsolete. |
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