Games like Final Payload
Games like Final Payload include Hollow Knight, Cave Story+, Airscape - The Fall of Gravity, Hollow Knight: Silksong, and Defy Gravity Extended. We matched them by the tags players give Final Payload on Steam (Exploration, Top-Down Shooter, Puzzle, Difficult, and Platformer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Platformer · Difficult · Exploration

Cave Story+
Shared: Exploration · Difficult · Platformer

Airscape - The Fall of Gravity
Shared: Exploration · Difficult · Platformer

Hollow Knight: Silksong
Shared: Difficult · Exploration · 2D

Defy Gravity Extended
Shared: Puzzle · Platformer · 2D

Rain World
Shared: Exploration · Difficult · Platformer

Geometry Dash
Shared: Difficult · 2D · Platformer

FEZ
Shared: Puzzle · Exploration · Platformer

ANIMAL WELL
Shared: Exploration · Puzzle · Platformer

The Witness
Shared: Exploration · Puzzle · Difficult

BEEP
Shared: Platformer · Puzzle · 2D

Kingdom Rush Frontiers - Tower Defense
Shared: Difficult · 2D · Strategy

Shipwrecked 64
Shared: Puzzle · Exploration · Platformer

La-Mulana
Shared: Difficult · Exploration · Platformer

Word Game
Shared: Exploration · Puzzle · 2D

Cuphead
Shared: Difficult · Platformer · 2D

Zuma Deluxe
Shared: Puzzle · 2D · Strategy

TUNIC
Shared: Exploration · Puzzle · Difficult

Bridge Constructor Portal
Shared: Puzzle · Strategy · Difficult

60 Seconds!
Shared: Exploration · Difficult · Strategy

BidKing
Shared: Strategy · Casual · Exploration

60 Seconds! Reatomized
Shared: Exploration · 2D · Strategy

Braid
Shared: Puzzle · Platformer · 2D

LIMBO
Shared: Puzzle · Platformer · 2D