... Please help me! I don't know why, but I suddently had the urge to read about a 'world building' type novel...

What I am lookin for: A light/web (preferably light) novel

Subject: a novel where , MC is a god/entity that has to build it's own world, physics laws, settings and living creatures.

Lenght of Story: the longest, the better!

• : No harem what'so ever please (preferably)

++ : if possible, a translated story

+++ : original language of the Story if not translated, I don't care

++++ : if there is none, please suggest some count building, nation building type novels.

Thanks for your help in advance,

Sincerly, Me, Myself and I 😛

My dearest wish:
I hope Humanity get destroyed by some almighty being existing in the deepest part of the cosmos! <3

That sounds like a concept I'd love to see, unfortunately I don't know of anything on that level of control but here are a couple novels where the MC is a deity of some sort or another:
Jashin Average (Novel)
Jashin ni Tensei Shitara Haika no Maou-gun ga Sassoku Metsubou Shisou Nandaga, Dousureba Indaro ka (Novel)

Looking for something different? Try one of these:

Otoyomegatari
Dungeon Meshi

http://royalroadl.com/fiction/5132
http://royalroadl.com/fiction/3836
also look in rrl for all of andur works

Thanks! I look forward to reading them!

Edit:
Is jashin average really a story about a god MC? From the synopsis, it does'nt look like it...

My dearest wish:
I hope Humanity get destroyed by some almighty being existing in the deepest part of the cosmos! <3

Yes, the MC is a god in Jashin Average (Novel). The summary doesn't really explain the jist of the entire work, but it's a fun little short read.

Here's another summary of it:

Pretty girl with sharp eyes gets "summoned" to another world. The god who summons her asks what she wants, and she says to be "average", after all her killer looks scared away many people in her "past" life. God consents, and sends her down to her new world. But, surprise surprise,the god misunderstood her wish. Her looks are the same , and the only thing average about her is her profession, as an "average evil god". How will she survive in this new world with her new "average evil god" abilities messing with her not-so-average life?

My First Planet
A cute oneshot.

Looking for something different? Try one of these:

Otoyomegatari
Dungeon Meshi