Double Dragon III (NES) v3.1 by Serrr.

Also, your version is v3.3 so it looks like an upgrade (to mine v2.5), but it's not. It's a bit unfair since it's not the same mod, even if some placement of enemies and levels are looks familiar and share the same ideas.

And this is especially weird, since mine version was renamed from "Remake" to "Classic" before, but your version is much more classic then mine ever be, since I redraw most of the levels to 16bit style, sorta.

More than that, you mentioned in readme, that this is "Update of the Double Dragon III Remake mod Russian version". You versions was based on Remake (that I developed from 2014) from the start.
Sure, you can use my mods and ideas (since I declared it as CC0, sorta) but you can thank me for that in readme, at least (If you have a modder's honor). Not just "made by Serr.. and thank Technos".

I do not want that folks (those few who are interested in it) are googled for DD3 mod and think that v2.5 is outdated and abandoned since v3.3 is exist. And I am still working on the "Remake" version.
v2.5 is the most recent version of the original mod, that is developed since 2014. You can't declare original version as outdated.

Why folks are always take mods from me (like Duck Hunt), modify it a bit and rename to own name? What the next? "SORR:Gothic1" by Denis Popov? Is is that hard to write: "thanks to original mod author, I appreciate his effort and tried to improved the mod". Have a heart and some of respects!

Was it impossible to name it like "Double Dragon III: Plus", "Duck Hunt: Remix", "Double Dragon III: EX" instead and give a thanks to all authors that are involved?

It's a "public domain" type of mod. Can be renamed if forked. Some forked versions are exist, but I am not responsible for them.
"Famicom" is because of the plot and cutscenes (Princess Noiram, Marion is not involved, etc). Not censored.

Brett is impressive on level 1-1. This room is much better made than in my version.
But your version of 1-1 with Brett animations and opened door with a view to the street is great

How could I not have thought to do the same myself.. I used this trick in China level a long time ago, though.

The Brett talking is annoying, though. It's overlap the screen while enemies are attacking. That the reason, why I tried to avoid such type of cutscenes in mine version.

Level 1-2. It's looks like mine a lot, but colors are different and some things are broken (like barrels and elevator). You could use the barrels as objects, not as a background layer.

screenshot:

The elevator is better made, but it's look weird in level 1-3. Enemies appear out of nowhere.

screenshot:

That is a great idea, to keep the gate opened.

China level (2-1) is a mess, totally broken with that type of shadow.
2-2 is ugly, but the fire is animated, and the level is much more vanilla than mine. But my version is much prettier =) MHO, of course. At least, no "dithering" artifacts.

screenshots:

Italy used level 4-2 as filtered with 2xSai but 4-1 is not.
4-1 is ugly, for sure. Too much artifacts from the dithering filter.
4-3 is suffer from dithering filter too. Shadows are broken, MHO.

screenshots:

Egypt 2-2 lost a nice "3D effect" from my version. Your version never had it, though, but I miss it.
Level 2-3 is great. Level is atmospheric and nicely redone. level 2-3, with opened door to the next room and shadow from it, is a nice idea.
Lot of dithering filter artifacts, though.
The next room is not that good. And the last room (with mummies) is awful. Too blurry and ugly in general.

screenshots:

Graphic is weird in general.. Too lot of "dithering filter artifacts", for my taste. But sometimes graphics look even better with that style and mod have widescreen support, though. Dots are here and there, but that's okay.
And why it is reflected everywhere, I wonder. Some folks are hate the rain already, but the rain with this type of effect is much worse.