The documentation for the toolkit is well written and there are video tutorials as well as an active community.

No need to pay more to get access to the source code.

Pixel games in the style of 8 or 16 bit systems need to have each pixel uniform on the screen which 2D Toolkit supports with a camera component.

Choose from either a box, sphere, or mesh collider that will output as either a 3D or 2D collider in Unity.

2D Toolkit allows for different sizes of atlas from 1x, 2x, or 4x which can be changed depending on platform resolution.

2D Toolkit is an editor extension so users don’t have to leave the Unity engine for tile mapping.

Create sprite sheets for tiles to save draw calls and to keep tilesets organized.

Create tilemaps in Tiled and implement with 2D Toolkit.