Games like Smiley Arena
Games like Smiley Arena include Bloons TD 6, Plants vs. Zombies GOTY Edition, Kingdom Rush - Tower Defense, Bloons TD 5, and Slime Rancher. We matched them by the tags players give Smiley Arena on Steam (Bullet Heaven, Tower Defense, Casual, Funny, and Colorful): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Tower Defense · Casual · Singleplayer

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

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

Bloons TD 5
Shared: Tower Defense · Casual · Funny

Slime Rancher
Shared: Cute · Colorful · Funny

Tangy TD
Shared: Tower Defense · Funny · Singleplayer

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

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

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

Cat Goes Fishing
Shared: Funny · Cute · Casual

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

CHUCHEL
Shared: Casual · Funny · Colorful

Passpartout: The Starving Artist
Shared: Casual · Funny · Singleplayer

The WereCleaner
Shared: Casual · Cartoony · Cute

Muse Dash
Shared: Cute · Casual · Colorful

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

Heretic's Fork
Shared: Bullet Heaven · Tower Defense · Casual

Zuma Deluxe
Shared: Casual · Funny · Cute

Draw & Guess
Shared: Casual · Funny · Cute

Pikuniku
Shared: Casual · Cute · Funny

Katamari Damacy REROLL
Shared: Casual · Colorful · Funny

Donut County
Shared: Casual · Funny · Cute

Is This Seat Taken?
Shared: Casual · Cute · Colorful

MECCHA CHAMELEON
Shared: Casual · Funny · Colorful