Which game engine are you using?

Added stop, fast forward and backward. Not sure how an upload button would look but if you use GIMP then you can easily modify the file yourself. Even I as a programmer can do it :) I hope it works out well with your software!

Good point! Made those too and added to collection :)

EDIT: I realized I added them in wrong size, they are now in 64x64 as they should be

I'd like to mention that Unity has improved it's 2D features immensely in their last release. It's also quite simple to work with and in principle similar to Stencyl. You can use the event system in a very similar manner to stencyl but you'll need to read up a little on it. 

Stencyl is a good place to begin if you're new to programming. You will likely realize that it can't do everything you want, in your case I think that you may hit some sngs when it comes to dynamically update sprites and create particle effect but I'm not entirely sure what you need to do :)

As you mention you have lots of ideas, try implementing one simple game in stencyl and one in unity or some other engine and see what you like most.

For me as a programmer it was hard to get used to the ECS-style of unity and other game engines and I think I maybe should have tried stencyl just to get used to behaviours and actors but coming from another background that may seem more logical to you :)