The Dragon Ball manga is typically seen as canon. It serves as the foundation upon which the entire franchise is built. There may be some spin-offs or adaptations that deviate, but the manga itself holds the primary status of canonicity.
In general, the Dragon Ball Super manga is accepted as canon. It aligns with the established lore and storylines of the Dragon Ball universe and is recognized by the creators and fans alike.
The original Dragon Ball story's canonicity is a matter of debate. Some believe it remains fully canon, while others think certain elements have been superseded or reinterpreted in later developments.
It probably wouldn't fit directly into the main canon as it's a rather light - hearted and comical concept. But it could exist as a side - story or an 'alternate universe' type of fanfic. It can show the characters in a more relaxed and fun - loving situation that we don't often see in the main series.
It's hard to say for sure. Sometimes new stories in video games are considered non - canon, but since it's related to such a big franchise, there's a chance it could be canon.