Games like Survivor
Games like Survivor include Chippy, SNKRX, Titan Attacks!, X Invader, and Deployment. We matched them by the tags players give Survivor on Steam (Arena Shooter, Indie, Shoot 'Em Up, Top-Down Shooter, and Twin Stick Shooter): closest matches first, and among equally close ones the better-known games.

Chippy
Shared: Arena Shooter · Shoot 'Em Up · Twin Stick Shooter

SNKRX
Shared: Arena Shooter · Top-Down Shooter · Shoot 'Em Up

Titan Attacks!
Shared: Arena Shooter · Shoot 'Em Up · Top-Down Shooter

X Invader
Shared: Arena Shooter · Shoot 'Em Up · Twin Stick Shooter

Deployment
Shared: Arena Shooter · Top-Down Shooter · Twin Stick Shooter

SYNTHETIK: Legion Rising
Shared: Indie · Top-Down Shooter · Difficult

Nova Drift
Shared: Shoot 'Em Up · Arena Shooter · Arcade

Cyberhunt
Shared: Indie · Shoot 'Em Up · Twin Stick Shooter

Nuclear Throne
Shared: Indie · Difficult · Top-Down Shooter

Bit Blaster XL
Shared: Shoot 'Em Up · Difficult · Shooter

The Hong Kong Massacre
Shared: Indie · Top-Down Shooter · Twin Stick Shooter

Nex Machina
Shared: Twin Stick Shooter · Indie · Shoot 'Em Up

State of Anarchy: Master of Mayhem
Shared: Top-Down Shooter · Shoot 'Em Up · Arena Shooter

Kill The Crows
Shared: Arena Shooter · Top-Down Shooter · Arcade

Insect Swarm
Shared: Shoot 'Em Up · Top-Down Shooter · Shooter

Sektori
Shared: Shoot 'Em Up · Arena Shooter · Twin Stick Shooter

Bot Vice
Shared: Top-Down Shooter · Shoot 'Em Up · Difficult

Sky Force Reloaded
Shared: Shoot 'Em Up · Top-Down Shooter · Indie

RUINER
Shared: Top-Down Shooter · Indie · Twin Stick Shooter

BALL x PIT
Shared: Shoot 'Em Up · Top-Down Shooter · Arcade

Enter the Gungeon
Shared: Indie · Difficult · Twin Stick Shooter

Iron Fisticle
Shared: Indie · Twin Stick Shooter · Shoot 'Em Up

Hotline Miami
Shared: Indie · Action · Top-Down

#KILLALLZOMBIES
Shared: Indie · Twin Stick Shooter · Shoot 'Em Up