Games like Boxing Champion
Games like Boxing Champion include Hades, Beat Saber, FIVE NIGHTS AT FREDDY'S: HELP WANTED, BONEWORKS, and Megabonk. We matched them by the tags players give Boxing Champion on Steam (Casual, Action, Action Roguelike, Sports, and Boxing): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Action Roguelike · Action · Indie

Beat Saber
Shared: VR · Action · First-Person

FIVE NIGHTS AT FREDDY'S: HELP WANTED
Shared: VR · Action · Casual

BONEWORKS
Shared: VR · Action · Singleplayer

Megabonk
Shared: Action Roguelike · Action · Survival

20 Minutes Till Dawn
Shared: Action Roguelike · Survival · Casual

War Thunder
Shared: Action · VR · Combat

Vampire Survivors
Shared: Action Roguelike · Casual · Action

BOXVR
Shared: Casual · Action · Sports

Resident Evil 7 Biohazard
Shared: VR · First-Person · Action

FPV Kamikaze Drone
Shared: Action · First-Person · Combat

BONELAB
Shared: VR · Action · First-Person

The Forest
Shared: Survival · Action · First-Person

Contractors
Shared: Action · VR · Casual

Resident Evil Village
Shared: Action · First-Person · VR

The Thrill of the Fight - VR Boxing
Shared: VR · Action · Sports

STRIDE
Shared: Action · VR · Sports

Mortal Sin
Shared: Action Roguelike · Action · First-Person

Automobilista 2
Shared: Sports · VR · Action

Bendy and the Dark Revival
Shared: Action · First-Person · Singleplayer

RUMBLE
Shared: VR · Action · Sports

The Binding of Isaac
Shared: Action Roguelike · Action · Indie

Skul: The Hero Slayer
Shared: Action · Action Roguelike · Indie

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Dungeon Crawler · Indie