Games like Pudding: Lyre Knight
Games like Pudding: Lyre Knight include Escape From Duckov, Pikuniku, Cyberhunt, Planes, Bullets and Vodka, and Bit Blaster XL. We matched them by the tags players give Pudding: Lyre Knight on Steam (Action, Adventure, Casual, Shooter, and Puzzle): closest matches first, and among equally close ones the better-known games.

Escape From Duckov
Shared: Action · Adventure · Shooter

Pikuniku
Shared: Adventure · Casual · Puzzle

Cyberhunt
Shared: Action · Casual · Adventure

Planes, Bullets and Vodka
Shared: Action · Casual · Shoot 'Em Up

Bit Blaster XL
Shared: Shooter · Shoot 'Em Up · Bullet Hell

Minishoot' Adventures
Shared: Adventure · Bullet Hell · Casual

TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Action · Adventure · Casual

There Is No Game: Wrong Dimension
Shared: Adventure · Puzzle · Casual

BALL x PIT
Shared: Action · Bullet Hell · Shoot 'Em Up

BEEP
Shared: Adventure · Action · Puzzle

Vampire Survivors
Shared: Bullet Hell · Casual · Action

OneShot
Shared: Puzzle · Adventure · Cute

20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Top-Down Shooter

VLADiK BRUTAL
Shared: Action · Shooter · Adventure

Broforce
Shared: Action · Shooter · 2D

Rabi-Ribi
Shared: Bullet Hell · Anime · Action

Revolution Ace
Shared: Action · Shoot 'Em Up · Shooter

Tomb Raider Game of the Year
Shared: Action · Adventure · Puzzle

Rocket Rats
Shared: Casual · Action · Bullet Hell

BioShock Infinite
Shared: Action · Shooter · Adventure

Puyo Puyo™Tetris®
Shared: Casual · Action · Puzzle

Enter the Gungeon
Shared: Bullet Hell · Action · Adventure

Exit the Gungeon
Shared: Action · Adventure · Bullet Hell

Out There Somewhere
Shared: Adventure · Puzzle · Action