Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics

I there is no such a gif. If you don't like particles that much than maybe just draw the dot with random offset and size multiple times?

I can also send you the game prototype if you give me your email. You'll be able to extract whatever you need from there, although I don't recommend to treat this as a learning material as the code quality is rather bad.