Games like Sling Ming
Games like Sling Ming include Planet of Lana, LIMBO, Pikuniku, Hollow Knight: Silksong, and GRIS. We matched them by the tags players give Sling Ming on Steam (Indie, Action, Adventure, Female Protagonist, and 2D): closest matches first, and among equally close ones the better-known games.

Planet of Lana
Shared: Action · Female Protagonist · Indie

LIMBO
Shared: Indie · Puzzle · Adventure

Pikuniku
Shared: Indie · Adventure · Cute

Hollow Knight: Silksong
Shared: Indie · 2D · Female Protagonist

GRIS
Shared: Indie · Female Protagonist · Adventure

BEEP
Shared: Indie · Adventure · 2D

Celeste
Shared: Indie · Female Protagonist · 2D

Portal 2
Shared: Puzzle · Female Protagonist · Singleplayer

Defy Gravity Extended
Shared: Indie · Action · 2D

Ori and the Will of the Wisps
Shared: Action · Adventure · Platformer

ICEY
Shared: Action · Female Protagonist · Indie

Hollow Knight
Shared: Indie · 2D · Adventure

Webbed
Shared: Cute · 2D · Physics

Iconoclasts
Shared: Indie · Action · Female Protagonist

Donut County
Shared: Indie · Cute · Adventure

Tomb Raider Game of the Year
Shared: Action · Adventure · Female Protagonist

Zup! 2
Shared: Indie · Puzzle · 2D

FEZ
Shared: Indie · Puzzle · Adventure

Out There Somewhere
Shared: Indie · Adventure · 2D

Human Fall Flat
Shared: Adventure · Puzzle · Action

Dust: An Elysian Tail
Shared: Action · Indie · Adventure

Rise of the Tomb Raider™
Shared: Action · Adventure · Female Protagonist

Portal
Shared: Puzzle · Female Protagonist · Puzzle Platformer

Freedom Planet
Shared: Action · Indie · Female Protagonist