Voyager runs into a spatial interphase during the Year of Hell, and emerges in the Mass Effect universe after the end of ME3. AU for both Voyager and ME3 (mildly altered Destroy ending).

AU. How did the Borg Collective come to be? What if the Systems Alliance had the Borg as allies during The First Contact War?

Forcibly pulled into the Star Trek universe, Shepard and Liara find themselves at odds with Voyager's crew and an enemy from their own galaxy. There will be action, adventure, maybe even a little bit of romance tossed in with all of the dry wit the captains from these two very different universes can muster.

The Voyager crew finds themselves caught in another temporal disturbance. This time it leads them to the truth about the history they thought they knew.

Hoping that a folding-space drive can shorten their voyage home, the crew of Voyager accidentally jumps into another universe. Working with the terrorist Commander Shepard (F), Voyager works to get back to their own universe. Shepard and Liara try to reconsile their relationship after Shepard's death and Liara's becoming the Shadow Broker.

Ive been working on the idea but Im not a good writter

The continuum proves that it is not perfect, Voyager adapts.

Elle is a worker on a planet where a labor shortage requires the hiring of off-world help. Elle enjoys her life and her friends, but she keeps having memories she can't seem to shake, and what caused a biotic to attack at work?

Flashfic collection, potential spoilers for Voyager episodes and Mass Effect 1. I do not own either of these stories.