Games like Raid Sky
Games like Raid Sky include ShellShock Live, Plague Inc: Evolved, Bloons TD 6, Stick Fight: The Game, and Gang Beasts. We matched them by the tags players give Raid Sky on Steam (Action, Casual, Strategy, 2D, and Multiplayer): closest matches first, and among equally close ones the better-known games.

ShellShock Live
Shared: Strategy · Action · 2D

Plague Inc: Evolved
Shared: Strategy · Casual · Indie

Bloons TD 6
Shared: Strategy · Multiplayer · Casual

Stick Fight: The Game
Shared: Action · Multiplayer · PvP

Gang Beasts
Shared: Action · Multiplayer · Casual

Mount & Blade II: Bannerlord
Shared: Strategy · Action · Multiplayer

Timberman
Shared: Casual · Action · 2D

Tooth and Tail
Shared: Strategy · Action · Casual

Bloons TD 5
Shared: Strategy · Action · Casual

Kingdom Rush - Tower Defense
Shared: Strategy · 2D · Casual

Buckshot Roulette
Shared: Multiplayer · Strategy · Indie

Russian Life Simulator
Shared: Action · 2D · Strategy

Town of Salem
Shared: Strategy · Multiplayer · Casual

Golf With Your Friends
Shared: Casual · Multiplayer · Indie

The Escapists 2
Shared: Strategy · Multiplayer · 2D

DETOUR
Shared: Strategy · Casual · Indie

Broforce
Shared: Action · 2D · Multiplayer

Liars Bar
Shared: Casual · Multiplayer · PvP

Move or Die
Shared: Action · Multiplayer · 2D

DJMAX RESPECT V
Shared: Casual · Action · Multiplayer

Awesomenauts
Shared: Action · 2D · Multiplayer

Marvel Rivals
Shared: Multiplayer · Action · PvP

Worms W.M.D
Shared: Action · Strategy · Multiplayer

Game Dev Tycoon
Shared: Strategy · Casual · Indie