Games like My Last 20
Games like My Last 20 include Vampire Survivors, Megabonk, Planes, Bullets and Vodka, Razortron 2000, and Boneraiser Minions. We matched them by the tags players give My Last 20 on Steam (Arcade, Casual, Bullet Hell, Colorful, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Pixel Graphics · Casual

Megabonk
Shared: Bullet Hell · Arcade · Roguelike

Planes, Bullets and Vodka
Shared: Casual · Arcade · Bullet Hell

Razortron 2000
Shared: Casual · Arcade · Retro

Boneraiser Minions
Shared: Bullet Hell · Pixel Graphics · Casual

To The Core
Shared: Casual · Arcade · Retro

Brotato
Shared: Bullet Hell · Roguelike · Singleplayer

LUFTRAUSERS
Shared: Arcade · Bullet Hell · Pixel Graphics

Rocket Rats
Shared: Bullet Hell · Casual · Pixel Graphics

Seraph's Last Stand
Shared: Casual · Bullet Hell · Pixel Graphics

The WereCleaner
Shared: Casual · Arcade · Retro

Cyberhunt
Shared: Casual · Arcade · Pixel Graphics

Nubby's Number Factory
Shared: Arcade · Roguelike · Stylized

Bit Blaster XL
Shared: Bullet Hell · Arcade · Casual

Timberman
Shared: Casual · Pixel Graphics · Arcade

DELTARUNE
Shared: Pixel Graphics · Bullet Hell · Comedy

Halls of Torment
Shared: Bullet Hell · Pixel Graphics · Arcade

BALL x PIT
Shared: Arcade · Bullet Hell · Pixel Graphics

UFO 50
Shared: Pixel Graphics · Arcade · Retro

Enter the Gungeon
Shared: Bullet Hell · Pixel Graphics · Roguelike

Nova Drift
Shared: Bullet Hell · Arcade · Colorful

Backyard Baseball '97
Shared: Casual · Arcade · Pixel Graphics