Played the free version on Steam. Liked it.
Bought the $5 version 3.2, loved it!
...2 Qs:
- How's the Extra version different from the vanilla one?
- Is it possible to upgrade from the $5 version to the extra for $5 extra?
The Sept 30, 2022 Dev Log explains what the Extras are:
Race of Life - Extra scene and short development update - 30.09.2022