¿Best approach to Load many many Levels?

What would be the best way I could use. If you have to load multiple levels and requires the unityplayer is very small.

1. Create Assets Bundles of each level of a prefab by level?
2. Creating Scenes for each level and create a prefab for each scene?
3. Create multiple players and load the player into the main player?
4. Create multiple Scenes at each level and load asynchronously in the primary?

Any other possible option?

Thanks for your answers

 

Well, I could think about 2 approaches:

1.) Every Level 1 Scene
Just make an empty GameObject and assign it a script with this content:

Code (csharp):

1.  
2. Application.LoadLevelAsync("Level2");
3. Application.LoadLevelAsync("Level3");
4. Application.LoadLevelAsync("Level4");
5.  

This way you can preload them. Best would be to leave the camera black and fade it in once this code has finished.

2.) 1 Scene, multiple levels.

Build multiple levels in 1 Scene and just teleport your player-object to the new area once he is done in the prev. level. Would not work very good with Outdoor Stuff I guess. But if you got for example interiors which are seperated you could have them under the terrain and port your player there.

 

I thought of another option for making the first main scene light level would have an empty, With a GameObject to load the first level of unity to the load would be too fast and could fade with screen loading screen, the main scene, this is feasible?