I made a thing a while back. I called it Resonance Cascade. The basic premise is kids on bikes (Stranger Things, Goonies, Stand by Me, Tales from the Loop, etc) playing out near a Black Mesa (from Half-Life) inspired event.
Mechanics are a mixture of Powered by the Apocalypse, Blades in the Dark, Burning Wheel, and Tales from the Loop. Uses an interesting dice mechanic.
Here’s the map for a playtest session with the friendly folks over at the SLC Indie RPG meetup. We played at Demolition Games.