Hello!
Those are slopes/ramps, they are meant to be placed on top of hills to create a path, like so:

Hope this helps, let me know if you have any other questions
No, not yet at least. You can find characters with tool animations in my Heroes pack (https://franuka.itch.io/fantasy-rpg-heroes-pack)
I know, I usually prioritize how the page looks over how "stealable" it is. Honest people will still eventually buy it if the assets are good, and if someone wants to take the time to rip part of the assets, well...I take it as a compliment :)
You're right that showing all 4 directions with the Idle animation might not be necessary here.
Hi man, thanks!
I plan to keep updating this and/or create related assets that work with it. Currently this pack is sitting at $1450, so we haven't reached the last goal yet. What you see above is a shared goal among all my packs (the whole bundle), so it's not what I take into account for the set goals in the description. But yes, I will keep adding content regardless of that, although most likely for next year.
Cheers!
Well, for starters, it depends on which version of RPG Maker you're using. And they use many different tilesheets depending on what the tiles are for. So, for example, there's a tilesheet for animated tiles, another for ground tiles, another for building tiles, walls...
The placing is different, too. And animated tiles are split into half-sized tiles, I think. So yeah, it's complicated. I tried adapting them once but gave up because it would require too much work for now. Feel free to try, of course, hopefully you'll find it easier than me.
Here's a guide explaining it for MV: https://robotsweater.medium.com/bots-guide-to-custom-art-in-rpgmaker-mv-understa...
And I also found these templates that might help: https://slyheegames.itch.io/rpg-maker-mvmz-sizing-templates
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I don't have plans for expanding this pack in the near future, but I do want to add attack and death animations to these sprites in a future update. I have many other updates planned before that, though, sorry! There's a lot I want to do but I usually have to compromise and choose some things over others, haha.
Anyway, thanks so much for the support! <3
Hi gabo, you can download a free demo here: https://franuka.itch.io/rpg-icon-pack-demo
Hello there! I barely use Unity, so I don't have a specific guide for that, sorry...
What I can tell you is that the slider is made out of 3 parts: The background rectangle, the stretchable filling (for measuring health, volume, etc.), and a little decorative "knob" on top (that moves at the end of the filling).
Sorry that I can't help you more at the moment! I'll look into it.
Hello! Here on the left are the settings I used for importing them into Unity, for pixel clarity. 
For alignment, I found that both fonts should have the same X position, but the outline should be placed 1px higher on Y axis. So, if "FantasyRPGtitle" Pos Y is 4, then "FantasyRPGtitleOutline" should be at 5. This way they align perfectly. Not sure why this is needed, since I created them in the same size and grid...

I hope this solves the issue for you!
Hi mate! I use Aseprite to create these. There you can set a grid (16x16, 32x32, 48x48, for example) and easily select each piece of the background boxes.
I thought this was also possible in game engines and other tools, but let me know if it would be necessary to splice the 9 parts first. I can put them in single files if needed.