Games like Tankron
Games like Tankron include Vampire Survivors, Brotato, Megabonk, BALL x PIT, and Nova Drift. We matched them by the tags players give Tankron on Steam (Action Roguelike, Bullet Hell, Arena Shooter, Twin Stick Shooter, and Action): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelike

BALL x PIT
Shared: Bullet Hell · Action · Action Roguelike

Nova Drift
Shared: Bullet Hell · Action Roguelike · Arena Shooter

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Roguelike

Rogue: Genesia
Shared: Bullet Hell · Action Roguelike · Twin Stick Shooter

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Roguelite

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelike

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Hell · Roguelite

Time Wasters
Shared: Action Roguelike · Bullet Hell · Twin Stick Shooter

Death Must Die
Shared: Action Roguelike · Bullet Hell · Roguelite

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Roguelite

Glyphica: Typing Survival
Shared: Action Roguelike · Arena Shooter · Bullet Hell

Nordic Ashes: Survivors of Ragnarok
Shared: Action Roguelike · Bullet Hell · Roguelite

Noobs Are Coming
Shared: Action Roguelike · Arena Shooter · Bullet Hell

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Arms of God
Shared: Action Roguelike · Bullet Hell · Arena Shooter

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Hell · Roguelike

SYNTHETIK: Legion Rising
Shared: Action Roguelike · Action · Roguelite

Hades
Shared: Action Roguelike · Roguelite · Action

FatalZone
Shared: Action Roguelike · Bullet Hell · Arena Shooter

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