Games like Transport Legion
Games like Transport Legion include Stacklands, Kingdom Rush 5: Alliance TD, Bloons TD 6, Kingdom Rush Origins - Tower Defense, and Balatro. We matched them by the tags players give Transport Legion on Steam (Strategy, Card Game, Turn-Based Strategy, Tower Defense, and Roguelite): closest matches first, and among equally close ones the better-known games.

Stacklands
Shared: Card Game · Strategy · Roguelite

Kingdom Rush 5: Alliance TD
Shared: Strategy · Tower Defense · 2D

Bloons TD 6
Shared: Strategy · Tower Defense · Cartoony

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

Balatro
Shared: Card Game · Strategy · Roguelite

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

Sid Meier’s Civilization® VI
Shared: Strategy · Turn-Based Strategy · Singleplayer

Wingspan
Shared: Card Game · Strategy · Building

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

Cardboard Town
Shared: Card Game · Strategy · Building

Nordhold
Shared: Strategy · Tower Defense · Turn-Based Strategy

Slay the Spire
Shared: Card Game · Strategy · Roguelite

Plants vs. Zombies GOTY Edition
Shared: Strategy · Tower Defense · 2D

Slay the Spire 2
Shared: Card Game · Strategy · Roguelite

Kingdom Rush 6: Genesis TD
Shared: Strategy · Tower Defense · 2D

Oxygen Not Included
Shared: Strategy · 2D · Building

Turmoil
Shared: Strategy · Turn-Based Strategy · Management

Through the Ages
Shared: Strategy · Card Game · Turn-Based Strategy

Mewgenics
Shared: Roguelite · Turn-Based Strategy · 2D

Gremlins, Inc.
Shared: Card Game · Strategy · Turn-Based Strategy

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Building

The Last Spell
Shared: Strategy · Turn-Based Strategy · 2D

Mindustry
Shared: Tower Defense · Strategy · Building

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