Thanks @MagicLord ....the basic idea came from "throwing frogs on the water" so player mechanics like....permanent jump and move with stop and direction changes + walls bounces.
......design aesthetics (will be) inspired much by games like Mirror's Edge™ and Portal.
I think....I would like to have a city there too....like the whole level.
There will be obstacles such as lasers, antigravity traps, magnetic traps, gravity lifts, moving and timed platforms.
@Zireael it's just WorldEnv. node glow and spatial material adjustment (developers did a great job....the glow is really glowing ... not like in the 2.x versions)......if you want , I can upload some screenshots from settings but it's really easy.
p.s.
I'm sorry for delayed answer and Thanks for interest.