which game mode do you play?

[Daze]

Sandbox and a little bit of career

[EdFred]

Sandbox. I "won" science and career mode in a few hours of game play (tech tree filled out, and over $5 or $10MM in funds), so now I just have a bunch of sandbox saves with different starting UT times - which oddly enough correspond to transfer windows, with said saves named Moho, Eve, Duna...

So, when I want to go to say, Eve, I go to my Eve save, build, launch, land, return, revert, and my Eve save is ready to be used again.

[ShadowZone]

I have a "main" save in sandbox mode where I try out all my stuff and then a science mode for challenges an the like to gather science. Never been a friend of the grind type missions in career mode. It takes something beautiful and creative and dulls it down in order for boring grind missions in order for you to finally reach the point where you can launch the real fun stuff. Career at the moment is a complete waste of time for me.

[TheMoonRover]

I use Sandbox for doing random stuff. But I usually start with Career, until I get bored of it. Then I do Science Mode (50% science rewards) instead. Then I might go back to career, until I get bored of it. Then I go back to Science Mode...

If I complete Science mode I start using that instead of Sandbox.