Games like Spellcaster
Games like Spellcaster include Chicken Invaders Universe, Escape From Duckov, Kingdom Rush - Tower Defense, BioShock Infinite, and Kingdom Rush 6: Genesis TD. We matched them by the tags players give Spellcaster on Steam (Action, Shoot 'Em Up, Shooter, Tower Defense, and Top-Down Shooter): closest matches first, and among equally close ones the better-known games.
Chicken Invaders Universe
Shared: Shoot 'Em Up · Shooter · Action
Escape From Duckov
Shared: Action · Shooter · Top-Down Shooter
Kingdom Rush - Tower Defense
Shared: Tower Defense · Action · Fantasy
BioShock Infinite
Shared: Action · Shooter · Fantasy
Kingdom Rush 6: Genesis TD
Shared: Action · Tower Defense · Fantasy
Orcs Must Die!
Shared: Action · Tower Defense · Fantasy
BALL x PIT
Shared: Action · Shoot 'Em Up · Top-Down Shooter
Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Shooter
GemCraft - Frostborn Wrath
Shared: Tower Defense · Action · 2D
Kingdom Rush 5: Alliance TD
Shared: Tower Defense · 2D · Fantasy
12 is Better Than 6
Shared: Action · Shooter · Top-Down Shooter
GemCraft - Chasing Shadows
Shared: Tower Defense · Action · Fantasy
Kingdom Rush Vengeance - Tower Defense
Shared: Tower Defense · 2D · Action
Sky Force Reloaded
Shared: Shoot 'Em Up · Action · Top-Down Shooter
Mage Arena
Shared: Action · Magic · Dark Fantasy
Borderlands 2
Shared: Action · Shooter · Looter Shooter
Kingdom Rush Frontiers - Tower Defense
Shared: Tower Defense · 2D · Fantasy
DoDonPachi Resurrection
Shared: Shoot 'Em Up · Top-Down Shooter · Shooter
Phoenix Force
Shared: Shoot 'Em Up · Top-Down Shooter · Fantasy
Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Action · Shoot 'Em Up · Shooter
METAL SLUG
Shared: Action · Shoot 'Em Up · 2D
Let Them Come
Shared: Action · Tower Defense · Shooter
Grand Theft Auto V Legacy
Shared: Action · Shooter · Atmospheric
Castle Of Alchemists
Shared: Action · Tower Defense · Shoot 'Em Up