Considering it's now 0.9 , will the game end at 1.0?
Most games on this site use a system called semantic versioning. Basically you don't read "0.9" as a single decimal number but rather as two numbers separated by a dot:
- 0.9 => major version 0 and minor version 9
- 0.11 => major version 0 and minor version 11
The major version only gets bumped up when the game is complete or undergoes a major rework and the minor version gets bumped up when the game has an update.
Sometimes you'll see three numbers, e.g. 0.1.1 - the third number is "patch version", i.e. bug fixes for a given update
Honestly imo it'd be better to just use a trivial version system like "Update 9" or "Chapter 9" because the major version is essentially useless in the context of games but it's become a sort of standard