I've talked about Ruffle to a few people over the past couple days, as they haven't heard of it and how it's capabilities are able to bring flash games back to the browser. But my favourite party trick is opening these flash games on my iPhone, a future that Steve Jobs would never have imagined
https://flashpointarchive.org/downloads claims to have over 170,000 games and animations. It also offers a sandboxed browser in which the original Flash player can run, thus providing ultimate compatibility with the archived titles.
I remember, in the early 00'ths , there was a Flash game/toy where you had something like a spider creature made out if a graph of nodes and edges (you could also build other creatures) and you could mess with it while it moved around.
You're not talking about Triachnid, but if you liked that game you should try Triachnid. One of the best flash games ever made IMO. You control a three-legged spider-thing by clicking and dragging each of its legs. It can climb walls, carry objects, extrude webs and use a "hand" to stick them to a surface. It's great.