What simple 3D game engine would you recommend?

Question

Programming

We need a very simple, but at the same time very productive engine. The game world will consist of polygons covered with a texture. No shaders, and all sorts of supernatural is not needed. That is, in fact, you need to display a couple of three polygons and low-detailed models, + hud / gui. Plus, we need physics for these polygons (the player does not fall under the map, does not pass through walls) and surround sound.
What engines (bundles of engines) can be used to implement this? Once again, I draw your attention to the fact that the emphasis is on performance (aka fps), and not on the beauty of graphics (shader water, lighting is better than in the real world), obviously CryEngine is not offered.
Still it is necessary that, this business was cross-platform. At least Windows/Linux x32/x64, and ideally set-top boxes and mobile platforms.
UPD#1
It seems to me that they didn’t understand me, I need a very simple graphics, units and anrial, it’s too much for me. My graphics should be closer to minecraft, and a dynamically changing map during the gameplay, that is, as far as I understand, BSP trees will not work. Source and Unreal Engine are swept aside immediately.
UPD #2
Okay, let's open all the maps, I'm doing a re-make of minecraft, A large number of so-called entity brushes (in the terminology of the GoldSoure engine (HL CS) ) will have a bad effect on performance. A completely different approach is needed here. Therefore, I'm looking for something more low-level (like Ogre3D), I don't want to mess around with naked OpenGL.

Answer 1

I would recommend unity3d.com
but I don't know how much more productive than others
here is a list of engines from Wikipedia - https://en.wikipedia.org/wiki/List_of_game_engines

Answer 2

Nuuu without any bells and whistles and CE and UE4 and U5 - will fly like crazy, unless they devour more memory.
And so, except perhaps GameMaker kakonit.

Answer 3

I would not dismiss unity, it has very good optimization and draws exactly as much as you need, that is, you need "simple graphics", please do not hang any shaders, etc. on your objects. and problems disappear. It is not entirely clear what is meant by "polygons" and "dynamically changing map", but if something is in the spirit of minecraft, then it will be enough to produce cubes like in minecraft and run on them, and physics (not to navigate the map, for example) has already been implemented "out of the box ", just set the desired parameters of the model and "cubes"

Answer 4

Marmelade, Cocos2d (Now they seem to be actively developing 3D), Unity, UE.
In general, graphics do not depend more on the engine, but on how you draw it.

Answer 5

Cho something you cunning when you write that you do not need shaders. Will you need at least a diffuse one?
Look towards Irrlicht or Ogre3D .

Answer 6

Unity 3d is C#.
C++ is Unreal Engine 4, OGRE, Irrlicht, Wave Engine, Godot Engine, etc.
www.indiedb.com/engines/top
I'd take a look at each of them if I were you (even GoldSource had their WorldCraft 3.3).
As well as the list of supported platforms.