Games like Witchtower: Spell Siege
Games like Witchtower: Spell Siege include Vampire Survivors, Wizard of Legend, Skul: The Hero Slayer, The Binding of Isaac: Rebirth, and Sephiria. We matched them by the tags players give Witchtower: Spell Siege on Steam (Tower Defense, Action Roguelike, Roguelite, Strategy, and Magic): closest matches first, and among equally close ones the better-known games.
Vampire Survivors
Shared: Action Roguelike · Roguelite · Pixel Graphics
Wizard of Legend
Shared: Action Roguelike · Magic · Local Co-Op
Skul: The Hero Slayer
Shared: Action Roguelike · Action · Roguelite
The Binding of Isaac: Rebirth
Shared: Action Roguelike · Pixel Graphics · Indie
Sephiria
Shared: Action Roguelike · Roguelite · Co-op
Orcs Must Die! Deathtrap
Shared: Tower Defense · Roguelite · Strategy
Necrosmith
Shared: Action Roguelike · Tower Defense · Roguelite
Halls of Torment
Shared: Action Roguelike · Roguelite · Action
Streets of Rogue
Shared: Action Roguelike · Roguelite · Action
Hades
Shared: Action Roguelike · Roguelite · Action
Bloons TD 6
Shared: Tower Defense · Strategy · Co-op
Enter the Gungeon
Shared: Action Roguelike · Pixel Graphics · Local Co-Op
Death Must Die
Shared: Action Roguelike · Roguelite · Action
Cult of the Lamb
Shared: Action Roguelike · Roguelite · Strategy
Nuclear Throne
Shared: Action Roguelike · Roguelite · Action
Dead Cells
Shared: Action Roguelike · Roguelite · 2D
Risk of Rain (2013)
Shared: Action Roguelike · Action · Pixel Graphics
Kingdom Rush Frontiers - Tower Defense
Shared: Tower Defense · Strategy · 2D
Ship of Fools
Shared: Action Roguelike · Roguelite · Local Co-Op
Risk of Rain 2
Shared: Action Roguelike · Roguelite · Co-op
Shape of Dreams
Shared: Action Roguelike · Roguelite · Co-op
Kingdom Rush - Tower Defense
Shared: Tower Defense · Strategy · 2D
Kingdom Rush 5: Alliance TD
Shared: Tower Defense · Strategy · 2D
GemCraft - Chasing Shadows
Shared: Tower Defense · Strategy · Action