Mmultiplayer could be suitable
A downloadable game for Windows, macOS, and Linux
We reach out to those who fly near to us and offer them a chance to join our lives for a little while, to take part in our journey with us. Our ranks will change, sometimes growing, sometimes shrinking to the point where we fear we are flying alone.
So cherish each member of your flock as they pass through your life; you never know how long you'll have with them, but find peace in the fact that we will all take flight together, bound for the same destination.
Use the mouse to fly, click on other birds to bring them into your flock.
"Tomorrow Untrodden" by The Flashbulb, used with permission.