Gremlins is yet another fine example of a standalone 80s movie. Sure, they made
The New Batch in 1990, but that wasn't planned from the outset.
Gremlins was never the 'first' film in a franchise (as far as I know) - it was just a one-off, cute comedy-horror movie.
It stars Gizmo, the wide-eyed mogwai who pretty much personifies the concept of Pandora's Box, along with his human friends, Zach Galligan and Phoebe Cates, who play Billy and Kate. This is Gizmo's show though, along with the eponymous Gremlins who later emerge - the humans are basically cattle waiting to be slaughtered.
This movie pushes slapstick to its acceptable limits - if it's Christmas and the protagonists are puppets, is it OK to fire an old lady through her own skylight on an overclocked stairlift? The answer, happily, is yes. I was one when
Gremlins was released so can't have been more than four or five the first time I watched it on TV. I don't remember ever actually being scared of the Gremlins - but then, I may have been too busy thinking Gizmo was awesome.