Games like Beastrun
Games like Beastrun include Oaken Tower, Kingdom Rush - Tower Defense, Backpack Battles, The Bazaar, and Kingdom Rush Frontiers - Tower Defense. We matched them by the tags players give Beastrun on Steam (Asynchronous Multiplayer, Auto Battler, Party-Based RPG, Strategy, and Fantasy): closest matches first, and among equally close ones the better-known games.

Oaken Tower
Shared: Auto Battler · Asynchronous Multiplayer · Strategy

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

Backpack Battles
Shared: Auto Battler · Strategy · Asynchronous Multiplayer

The Bazaar
Shared: Auto Battler · Strategy · Asynchronous Multiplayer

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

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

Game Dev Tycoon
Shared: Strategy · Casual · 2D

Totally Accurate Battle Simulator
Shared: Strategy · Funny · Simulation

Master Healer Kale with useless party
Shared: Party-Based RPG · Auto Battler · Fantasy

Kingdom Rush 5: Alliance TD
Shared: Strategy · 2D · Fantasy

Legion TD 2 - Multiplayer Tower Defense
Shared: Auto Battler · Strategy · Fantasy

Plague Inc: Evolved
Shared: Strategy · Casual · Simulation

Batomon Showdown
Shared: Auto Battler · Asynchronous Multiplayer · Strategy

Slime Rancher
Shared: Cute · Funny · Casual

Book of Yog Idle RPG
Shared: Auto Battler · Casual · Strategy

Zero Stress King: Idle Defense
Shared: Auto Battler · Strategy · Casual

Eslabong
Shared: Auto Battler · Strategy · Fantasy

Town of Salem
Shared: Strategy · Casual · Funny

Reus
Shared: Strategy · Casual · 2D

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

Tower Wizard
Shared: Strategy · Fantasy · 2D

100% Orange Juice
Shared: Strategy · Cute · Casual

Bloons TD 6
Shared: Strategy · Casual · 2D

Dwarves: Glory, Death and Loot
Shared: Auto Battler · Strategy · Party-Based RPG