Please check the individual story headers for warnings and summaries; I haven't included those in this list.
Prompt: Sam|Jolinar, any. The Goa'uld attack came before the ashrak had time to find them. Now the ashrak is dead, and Sam and her new symbiote are the only survivors at the SGC.
Link: Unwilling Companions
Flavour: John Sheppard/Samantha Carter
Prompt: Carter/Sheppard. "I Want you here. I don't care if it's a hundred degrees and every blade of grass dies. Without you, none of that matters to me." - Kami Garcia
Link: To Find Our Way
Prompt: SG-1, any. Eventually, even Sam admitted using the time machine could not make things worse.
Link: Unusual Choices
Flavour: See the story header
Prompt: SG-1, any. SG-1 accidentally activates an alien device which seems to do nothing. When they return to Earth, the Goa'uld rule the planet. Also, SG-1 learn they were all killed years ago.
Link: A Changed Life
Flavour: Rodney McKay/John Sheppard
Prompt: It was an innocent, but deadly, mistake.
Link: Embrace the Silence
Flavour: John Sheppard/Rodney McKay
Prompt: Weir, any. They received a badly scrambled message from Earth, and then nothing.
Link: Prodigals (The Hard Prayer remixed)