Games like PolyDestroyer
Games like PolyDestroyer include Insect Swarm, Planes, Bullets and Vodka, Bit Blaster XL, ShellShock Live, and Shadowgrounds. We matched them by the tags players give PolyDestroyer on Steam (Casual, Shooter, 2D, Combat, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.
Insect Swarm
Shared: Shooter · Shoot 'Em Up · Top-Down Shooter
Planes, Bullets and Vodka
Shared: Casual · Shoot 'Em Up · Shooter
Bit Blaster XL
Shared: Shooter · Shoot 'Em Up · 2D
ShellShock Live
Shared: 2D · Shooter · Casual
Shadowgrounds
Shared: Shooter · Top-Down Shooter · Aliens
STAR WARS™ Battlefront™ II
Shared: Shooter · Combat · Space
20 Minutes Till Dawn
Shared: Shoot 'Em Up · Top-Down Shooter · Combat
Cyberhunt
Shared: Casual · Shoot 'Em Up · 2D
Alien Shooter
Shared: Shooter · Aliens · Top-Down
State of Anarchy
Shared: Casual · Shoot 'Em Up · Shooter
Alien Breed: Impact
Shared: Shooter · Top-Down · Isometric
SNKRX
Shared: Shoot 'Em Up · Top-Down Shooter · Shooter
Rocket Rats
Shared: Casual · 2D · Shooter
Apocalypse Party
Shared: Casual · Top-Down Shooter · Shoot 'Em Up
Intravenous 2
Shared: Shooter · Top-Down Shooter · Combat
Halo: Spartan Assault
Shared: Shooter · Top-Down Shooter · Top-Down
Starblast
Shared: Casual · 2D · Shooter
Alien Shooter 2: Reloaded
Shared: Shooter · Shoot 'Em Up · Aliens
DoDonPachi Resurrection
Shared: Shooter · Shoot 'Em Up · Top-Down Shooter
RIP - Trilogy™
Shared: Casual · Shooter · 2D
ESCHATOS
Shared: Shooter · Shoot 'Em Up · 2D
Space Rock Breaker
Shared: Casual · Top-Down · 2D
Minishoot' Adventures
Shared: Casual · 2D · Top-Down
Strike Force Heroes
Shared: Shooter · 2D · Combat