Creating 2D Scene newcomer problems

Unity Engine
1

So i have gathered png images of tilesets from forums etc…(A png image that has many assets created inside)
A image with many assets inside so… shall i cut each asset from the image? and how do i do this? with sniping tool or with gimp? (why dont these people post each png image separate… is there a trick or something?)

Also i have created 2d pixel art myself and how do i transfer it inside unity what image type does it need to be?

My goal is to make a game in summer and i am a little rusty i have only made 3d games but i am in love with 2d.

I ll also search in asset store for pretty 2d assets

Any feedback/info about anything is welcomed … i just want publish my game in summer and my goal is self improvement and at least one dollar earnings xd

I know how to code but have never used 2d assets in my life

Also do i put each png image manually and create something like super mario or is there a better way? i know this is time consuming but i dont know how am i supposed to make a scene from small png images each one being a different block that all of these together can make a beautifull world/scene

2

this is an example and also if anyone has found anything beautifull in asset store he is welcomedd to post

3138445--238032--TileToon1.png
3138445--238032--TileToon1.png793×489 82.7 KB

3

Oh my gos so many beutifull assets in asset store so wonderfull !!!

4

I’m new to this too, but I think you are looking for the “Splice” options. You can have a single image, that you then mark areas, each area will act as a separate “sprite”.
As I said, I’m new, so I don’t know if this is the 100% right track, but I came across a description in the Qill18Creates tutorial Unity Base-Building Game Tutorial episode 8, or 9 I think.