Our first RNEIxtra song was from the video game Unravel Two.
I've attached some screenshots from when me and my brother played this game, it was a lovely co-op game that was really cute!

Synopsis from Wikipeida:

note: characters have changeable colours.

A red Yarny is separated from his home and his owner in a storm at sea, and is washed ashore with his yarn being cut to a dead end. He encounters a blue Yarny among the shipwreck and the two connect their dead ends together, forming a bond. A spark emerges from the connection and the continuous objective of the game is to chase it. The two Yarnys explore the forest and the underground before emerging to ground level and taking residence in an abandoned lighthouse - the game's loading hub.

The Yarnys enter the corridor of an adoption home where a young girl is attempting to escape abusive adults, and the Yarnys help her by using the spark to chase the adults off. A boy knocks on her bedroom window, and she escapes with him through the rooftop. The Yarnys follow the children through a small park, and the adults take the form of dark shadows with red sparks that disintegrate the Yarnys on touch.

The Yarnys emerge in a sunny countryside setting in the midst of midsummer celebration, but as the children are mistreated by the intoxicated adults, the setting turns dark and threatening. The Yarnys run from the shadows and, along with the children, hide from the adults. They are chased through the forest by a wood grouse, narrowly escaping. As the children play and go swimming in the forest, the Yarnys explore the woods and are chased through a lake by a pike.

By nighttime, adults search for the children with flashlights and hounds in an old factory. The boy is caught and locked up, but later escapes when the Yarnys cause a machine to malfunction, causing a mayhem distracting the adults, and the children are reunited. The Yarnys help the children hide by chasing the adults off with the spark, and finally break out of the factory. A truckload of wooden logs crash onto an electrical fence, starting a forest fire that spreads to the buildings and stables. The girl rescues the boy from the fire when he is stuck in branches by a stream. The Yarnys struggle their way through, and the children are seen rescuing the stable horses from the fire before themselves running into safety.

Initially, the Yarnys go through the ruins of the forest ravaged by wildfire, and go through an abandoned watermill, gradually making it active again, and they follow the water to the nearby rapids in a sunny setting. The children are seen pushing an adult into the current. In the final cutscene, the lighthouse is surrounded by dark spirits, but the spark chases them away and a group of Yarnys of various shapes and colors appear. Together they bring the spark to the center of the lighthouse and its light is restored, and the storm outside passes over.