Games like Defend The Cubes
Games like Defend The Cubes include Bloons TD 6, Plants vs. Zombies GOTY Edition, Rogue Tower, Kingdom Rush - Tower Defense, and Among Us 3D. We matched them by the tags players give Defend The Cubes on Steam (Card Battler, Tower Defense, Strategy, 3D, and Linear): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Tower Defense · Strategy · 3D

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

Rogue Tower
Shared: Tower Defense · Strategy · 3D

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

Among Us 3D
Shared: Strategy · 3D · Casual

Kingdom Rush 5: Alliance TD
Shared: Tower Defense · Strategy · Cartoony

Thronefall
Shared: Tower Defense · Strategy · 3D

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

Bloons TD 5
Shared: Tower Defense · Strategy · Casual

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

Emberward
Shared: Tower Defense · Strategy · 3D

Kingdom Rush Vengeance - Tower Defense
Shared: Tower Defense · Strategy · Singleplayer

Defend Your Life: TD
Shared: Tower Defense · Strategy · Casual

DICEOMANCER
Shared: Card Battler · Strategy · Colorful

The WereCleaner
Shared: Casual · Strategy · Cartoony

Tiny Tactics
Shared: Tower Defense · Strategy · 3D

Bee Island
Shared: Tower Defense · Strategy · 3D

Relic Guardian - Tower Defense
Shared: Tower Defense · Strategy · Casual

Kingdom Rush 6: Genesis TD
Shared: Tower Defense · Strategy · Linear

CHUCHEL
Shared: Casual · Colorful · Cartoony

Overdungeon
Shared: Strategy · Card Battler · Casual

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

Stacklands
Shared: Card Battler · Strategy · Survival

Plants vs. Zombies™: Replanted
Shared: Tower Defense · Casual · Strategy