I’ve seen these planes flying a few times, and it does seem to be an every Saturday night thing, but I never had the camera handy before.
As far as I can tell, a group of model plane (is that the right term?) enthusiasts have decorated their planes with LED lights, and each weekend they get together and fly them. You can hear a guy yelling out directions so that the planes fly in formation and don’t crash one another. Maybe it’s just that I have a fascination with the shiny things in life, but I could’ve watched this for an hour without getting bored.
The times I’ve caught it, they’re always in the park area by the Riverside Mall near Clarke Quay on Saturday nights. Usually I’ve caught this around 9-10pm.
Enjoy!
Expat Bostonians 
I saw them tonight as well! I’m such a magpie, going “Oooooh… shiny…”
totally my reaction too.
my mum and aunts were amazed by these…and so was I….saw them at Riverwalk some time ago..but not so many…just a few.
in your video they look like flying saucers or alien birds!
At first I thought they were kites, but the way they moved made that an impossibility. Upon zoom, I’m relatively sure they’re remote controlled planes.