Games like Crystal Tower Defense
Games like Crystal Tower Defense include Rogue Tower, Bloons TD 6, Emberward, Thronefall, and Tower Dominion. We matched them by the tags players give Crystal Tower Defense on Steam (Tower Defense, Strategy, Roguelite, Procedural Generation, and 3D): closest matches first, and among equally close ones the better-known games.

Rogue Tower
Shared: Tower Defense · Strategy · Procedural Generation

Bloons TD 6
Shared: Tower Defense · Strategy · Casual

Emberward
Shared: Tower Defense · Strategy · Roguelite

Thronefall
Shared: Tower Defense · Strategy · 3D

Tower Dominion
Shared: Tower Defense · Strategy · Roguelite

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Strategy · Casual

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Base Building

Age of Darkness: Final Stand
Shared: Tower Defense · Strategy · 3D

Nordhold
Shared: Tower Defense · Strategy · Roguelite

RimWorld
Shared: Strategy · Base Building · Sci-fi

Kingdom: New Lands
Shared: Tower Defense · Roguelite · Base Building

Cluckmech Oasis
Shared: Strategy · Tower Defense · Roguelite

Wall World
Shared: Roguelite · Tower Defense · Strategy

Bee Island
Shared: Tower Defense · Strategy · Base Building

Mineral Defense
Shared: Strategy · Tower Defense · Roguelite

They Are Billions
Shared: Strategy · Tower Defense · Base Building

Isle of Arrows
Shared: Tower Defense · Strategy · Roguelite

Outpost: Infinity Siege
Shared: Tower Defense · 3D · Base Building

FTL: Faster Than Light
Shared: Strategy · Sci-fi · Procedural Generation

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

Kingdom Rush Frontiers - Tower Defense
Shared: Tower Defense · Strategy · Casual

Minimalist Tower Defense
Shared: Tower Defense · Strategy · Top-Down

Kingdom Rush Origins - Tower Defense
Shared: Tower Defense · Strategy · Casual

Mindustry
Shared: Tower Defense · Strategy · Base Building