A question about online quests

[Topazfalcon]

Which ones can be played single player?

[Bit]

I think any of them can be played alone Online .. I'm not too sure.

Offline, No, not yet for the Cube.

[Guntz348]

You can start all of them alone, but some of them, have two person doors that you have to go through to get to the end. I'm pretty sure Ice Spinner does and I want to say EN2 has them also.