Games like Omniblast
Games like Omniblast include Vampire Survivors, Broforce, Kingdom Rush - Tower Defense, SANABI, and Warhammer 40,000: Space Marine 2. We matched them by the tags players give Omniblast on Steam (Action, Space, 2D, Singleplayer, and Local Co-Op): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: 2D · Singleplayer · Pixel Graphics

Broforce
Shared: Action · 2D · Local Co-Op

Kingdom Rush - Tower Defense
Shared: 2D · Singleplayer · Action

SANABI
Shared: Action · Pixel Graphics · Singleplayer

Warhammer 40,000: Space Marine 2
Shared: Action · PvE · Singleplayer

Rhythm Doctor
Shared: Action · Singleplayer · Pixel Graphics

Cyberhunt
Shared: Action · Casual · 2D

Timberman
Shared: Action · Casual · 2D

Trailmakers
Shared: Space · Action · Singleplayer

STAR WARS Jedi: Survivor™
Shared: Action · Singleplayer · Space

Skul: The Hero Slayer
Shared: Action · 2D · Singleplayer

The Escapists
Shared: Singleplayer · 2D · Action

Risk of Rain Returns
Shared: 2D · Action · Local Co-Op

Aliens: Dark Descent
Shared: Action · Singleplayer · Tactical

Kingdom Rush Origins - Tower Defense
Shared: 2D · Singleplayer · Casual

FTL: Faster Than Light
Shared: Space · Singleplayer · Strategy

Teenage Mutant Ninja Turtles: Shredder's Revenge
Shared: 2D · Pixel Graphics · Action

UFO 50
Shared: Action · 2D · Pixel Graphics

Heat Signature
Shared: Space · Action · Singleplayer

BlazBlue Entropy Effect
Shared: Action · 2D · Action-Adventure

SUPER CHICKEN JUMPER
Shared: 2D · Pixel Graphics · Action

Castle Crashers®
Shared: 2D · Local Co-Op · Action

LEGO® Star Wars™: The Skywalker Saga
Shared: Space · Action · Local Co-Op

Marvel's Guardians of the Galaxy
Shared: Singleplayer · Action · Action-Adventure