Are you supposed to get 10k everyday if you get in the highscore list (top 10 on Thimblerig)? As far as I know I'm not getting it everyday. I got one today at midnight but not yesterday.

It's a first-time reward.

I don't think it's a first time prize. Last time I got 10k everyday was with Spectrail. It wasn't a one-time thing. I got it everyday at midnight until the day it stopped because the highscore table broke...

Is the highscore for this game one time, or accumulative?

Pretty sure it's accumulative. The problem though seems to have fixed itself, as I'm now getting it everyday. Unless you're not supposed to...?

Have you been playing it since you had that gap where you didn't get the 10k each night?

Yes

Only the top 10 scores on the list get 10k each day. It's more than likely your score had dropped out of the top 10 slot for awhile. :)

Weird, I thought I was in the top 10 from the first day I got to the top 10 and on. shrugs oh well. you can lock this now

Locking. :)