Games like The Last Friend
Games like The Last Friend include Plants vs. Zombies GOTY Edition, Bloons TD 6, Kingdom Rush - Tower Defense, Bloons TD 5, and Kingdom Rush 5: Alliance TD. We matched them by the tags players give The Last Friend on Steam (Tower Defense, Singleplayer, Action, Indie, and Beat 'em up): closest matches first, and among equally close ones the better-known games.

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

Bloons TD 6
Shared: Tower Defense · Singleplayer · Strategy

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

Bloons TD 5
Shared: Tower Defense · Action · Strategy

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

Castle Crashers®
Shared: 2D · Beat 'em up · Hack and Slash

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

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

Rock 'N' Roll Defense
Shared: Tower Defense · Action · Strategy

Orcs Must Die!
Shared: Tower Defense · Action · Singleplayer

ICEY
Shared: Action · Singleplayer · Indie

Muse Dash
Shared: Singleplayer · Anime · Cute

GemCraft - Chasing Shadows
Shared: Tower Defense · Singleplayer · Indie

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

Tangy TD
Shared: Tower Defense · Action · Singleplayer

Orcs Must Die! 2
Shared: Tower Defense · Action · Indie

One Finger Death Punch
Shared: Action · Indie · Singleplayer

Skul: The Hero Slayer
Shared: Action · Indie · Singleplayer

Dust: An Elysian Tail
Shared: Action · Indie · Singleplayer

Game Dev Tycoon
Shared: Indie · Singleplayer · Strategy

Battle Ranch: Pigs vs Plants
Shared: Tower Defense · Indie · Singleplayer

Infested Planet
Shared: Tower Defense · Action · Singleplayer

Montaro
Shared: Indie · Casual · Anime

Rhythm Doctor
Shared: Singleplayer · Indie · Action