I have to agree that none of them in any way are SNES style at all. Some of them may kind of resemble some FMV games of the mid to late 90s.
If you're wanting to get an SNES feel, you'd be best off tracing the backgrounds with a limited palette and using some game sprites for reference.
But if you're just wanting backgrounds in general, the last one is fine at least. It just doesn't evoke any graphic style.
But if you really want to go the route of using filters or such, you could create or find an image with a color palette that's fitting for SNES games, convert it into an indexed image, and then import/past your background into that image. Then you could use filter - blur - pixelize or the equivalent.
Here's an example using an Altered Beast sprite sheet and then pixelized at a 2x2 pixel setting.
If you're wanting to get an SNES feel, you'd be best off tracing the backgrounds with a limited palette and using some game sprites for reference.
But if you're just wanting backgrounds in general, the last one is fine at least. It just doesn't evoke any graphic style.
But if you really want to go the route of using filters or such, you could create or find an image with a color palette that's fitting for SNES games, convert it into an indexed image, and then import/past your background into that image. Then you could use filter - blur - pixelize or the equivalent.
Here's an example using an Altered Beast sprite sheet and then pixelized at a 2x2 pixel setting.
