Games like Balloon to the Moon 2
Games like Balloon to the Moon 2 include Celeste, Ori and the Will of the Wisps, SANABI, Rabi-Ribi, and Momodora: Reverie Under The Moonlight. We matched them by the tags players give Balloon to the Moon 2 on Steam (Adventure, Casual, Action-Adventure, Platformer, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Platformer · 2D Platformer

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

SANABI
Shared: Adventure · 2D Platformer · Action-Adventure

Rabi-Ribi
Shared: Metroidvania · Anime · Action-Adventure

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Metroidvania · Side Scroller

Hollow Knight
Shared: Platformer · Metroidvania · Adventure

Blasphemous 2
Shared: Adventure · Metroidvania · 2D Platformer

Momodora: Moonlit Farewell
Shared: Metroidvania · Action-Adventure · Platformer

Prince of Persia The Lost Crown
Shared: Adventure · Metroidvania · 2D Platformer

Dead Cells
Shared: Adventure · Metroidvania · 2D

9 Years of Shadows
Shared: Platformer · Metroidvania · Action-Adventure

Owlboy
Shared: Adventure · Platformer · Metroidvania

Afterimage
Shared: Metroidvania · 2D Platformer · Side Scroller

TEVI
Shared: Metroidvania · Action-Adventure · Anime

Haiku, the Robot
Shared: Adventure · Metroidvania · Platformer

Rusted Moss
Shared: Platformer · Adventure · Metroidvania

Sonic Superstars
Shared: Adventure · Platformer · Casual

Well Dweller
Shared: Action-Adventure · Metroidvania · Adventure

Nyaruru Fishy Fight
Shared: Metroidvania · 2D Platformer · Action-Adventure

The Darkest Tales — Into the Nightmare
Shared: Adventure · Action-Adventure · Platformer

The Messenger
Shared: Platformer · Metroidvania · 2D

Touhou Luna Nights
Shared: Metroidvania · Platformer · Action-Adventure

Sonic Origins
Shared: Adventure · 2D Platformer · Platformer

Rain World
Shared: Platformer · Adventure · 2D