Games like Elite Comet
Games like Elite Comet include Brawlhalla, INSIDE, Your Only Move Is HUSTLE, Planet of Lana, and Katana ZERO. We matched them by the tags players give Elite Comet on Steam (2D Platformer, PvE, Platformer, 2D Fighter, and Strategy): closest matches first, and among equally close ones the better-known games.

Brawlhalla
Shared: 2D Platformer · 2D Fighter · Platformer

INSIDE
Shared: 2.5D · 2D Platformer · Platformer

Your Only Move Is HUSTLE
Shared: 2D Fighter · Strategy · Action

Planet of Lana
Shared: 2D Platformer · Action · Platformer

Katana ZERO
Shared: Platformer · 2D Platformer · Action

HELLDIVERS™ 2
Shared: PvE · Action · Sci-fi

Pizza Tower
Shared: 2D Platformer · Platformer · Action

GrandChase
Shared: PvE · Action · 2D Fighter

Sonic Superstars
Shared: 2D Platformer · Platformer · Action

Trine 2: Complete Story
Shared: 2D Platformer · Platformer · 2.5D

Thomas Was Alone
Shared: Platformer · 2D Platformer · Sci-fi

Mark of the Ninja
Shared: Platformer · Stealth · Action

SANABI
Shared: 2D Platformer · Action · Platformer

Anomaly Agent
Shared: 2D Platformer · Platformer · 2D Fighter

F.I.S.T.: Forged In Shadow Torch
Shared: Platformer · 2D Platformer · Action

Warhammer 40,000: Space Marine 2
Shared: PvE · Action · Sci-fi

Heat Signature
Shared: Strategy · Action · Stealth

Trine Enchanted Edition
Shared: 2D Platformer · Strategy · Action

Rivals of Aether II
Shared: 2D Fighter · Action · 2.5D

Super Meat Boy
Shared: Platformer · 2D Platformer · Indie

Sonic Origins
Shared: 2D Platformer · Action · Platformer

VVVVVV
Shared: Platformer · 2D Platformer · Indie

Mini Motorways
Shared: Strategy · Casual · Minimalist

Defy Gravity Extended
Shared: Platformer · Action · Indie