To be honest, I quite like the way RPG Maker works and I've been using it for almost 20 years at this point. That's always going to be a hard thing to break away from. There's a software called RPG Architect that is like RPG Maker on crack, and that's something that I think I could get a lot more mileage out of going forward while still being closer to RPG Maker than anything else. It's got 3D support built in too, so I'd be able to make my next game (it's horror) something of a cool 2D-3D hybrid that way.
There's also the prospect of a new RPG Maker coming soon. Nothing has been announced yet, but they're definitely cooking up something. Judging by the dates between other RPG Maker releases, a new one should be coming within the next year or two. That could change things for me also, if they've got something like 3D implemented in it. I really wish I could just take RPG Maker 3 straight from PS2 and use it on PC with the added ability to import assets. That would actually be pretty much my ideal game engine, funny enough.
@beardalaxy Check out Solarus. It's like RPG Maker but for Zelda clones.
@xianc78 thanks, I'll check it out! Who knows what I might be able to do with it. I'm trying to make a horror game with puzzle elements and chase sequences, so this could theoretically work.
There are certainly other engines out there too. Smaller ones, but ones that are much more focused on specific things. As much as I think Godot, Unity, and Unreal are great and really powerful, they're also very broad and that makes it hard to even just figure out how to use them. What I like about RPG Maker is that it's very clearly meant to make RPGs with it, so it's very focused on that, but if you know your way around the engine you can still get it to do a lot more than that. That's rad.
Just saw some videos for RPG In A Box and EasyFPS. Both of those look pretty interesting to mess around with as well. The former is mostly voxel-based, and the latter is sort of like an engine to make a DOOM clone in. I can see the game I want to make working in both of them as long as they can do everything I'd want them to.
It might behoove me to check out a bunch of these and try to get all of my mechanics I want built in the engine to see how fast I can get them done as well as if I can get them made at all. Just do a bunch of tech demos and then pick from there.