Lifestream is a PC adventure title from 2004. Recent coverage indicates Square Enix has created a crossover event connecting Final Fantasy 14 with the original Final Fantasy 7 through content called Beyond the Lifestream, which features an 8-person raid. The event also includes updates to the Gold Saucer area, marking the first significant convergence between these two flagship Final Fantasy properties.
via Polygon
Square Enix is bringing Final Fantasy 14 and FF7 together for the first time in Evercold's Beyond the Lifestream raid and some new Gold Saucer updates