You can use level select, just like the other Sonic games.
The US version even lets you restart the stage like time attack mode.
When you finish a stage via level select, you go back to the title screen...
We should be allowed to submit time stats for past, bad future, and good future stages.
The differences between time zones are numerous.
We should also be allowed to submit time stats for the 8th special stage.
There are 78 levels in Sonic CD all together, and I don't understand why we can't submit time stats for them.
Is there some mysterious reason we must use Time Attack mode, and that's it?
I know there are the future/past sign posts, but traveling between times shouldn't be allowed, IMHO...but that's another discussion entirely (I don't really care either way TBH, because on the other hand, it could be cool to switch between times in a speed run.)
I mean, I agree for the present stages, and act 3 bad futures, Time Attack mode only.
But, we shouldn't exclude all the rest of the stages in the game just because they aren't listed in time attack mode.
That's like cutting out at least two thirds of the game.