Games like Lost Items
Games like Lost Items include Touhou Big Big Battle, BLOCKPOST LEGACY, VRChat, Path of Exile, and Dr. Langeskov, The Tiger, and The Terribly Cursed Emerald: A Whirlwind Heist. We matched them by the tags players give Lost Items on Steam (Free to Play, Indie, and Early Access): closest matches first, and among equally close ones the better-known games.

Touhou Big Big Battle
Shared: Early Access · Indie · Free to Play

BLOCKPOST LEGACY
Shared: Free to Play · Indie · Early Access

VRChat
Shared: Free to Play · Early Access · Free To Play

Path of Exile
Shared: Free to Play · Indie · Free To Play

Dr. Langeskov, The Tiger, and The Terribly Cursed Emerald: A Whirlwind Heist
Shared: Free to Play · Indie · Free To Play

Samsara Room
Shared: Indie · Free to Play · Free To Play

Ultimate Custom Night
Shared: Free to Play · Indie · Free To Play

SMITE®
Shared: Free to Play · Indie · Free To Play

Century: Age of Ashes
Shared: Free to Play · Indie · Free To Play

Aimlabs
Shared: Free to Play · Indie · Free To Play

Supraball
Shared: Free to Play · Indie · Early Access

Where Winds Meet
Shared: Free to Play · Indie · Free To Play

Iron Snout
Shared: Free to Play · Indie · Free To Play

skate.
Shared: Free to Play · Early Access · Free To Play

Dota 2
Shared: Free to Play · Free To Play

Project Zero Deaths
Shared: Free to Play · Early Access · Indie

Dark Deception
Shared: Free to Play · Indie · Free To Play

Neon Beats
Shared: Free to Play · Indie · Free To Play

RPG MO
Shared: Free to Play · Early Access · Indie

Super Bernie World
Shared: Free to Play · Indie · Free To Play

Climb
Shared: Free to Play · Early Access · Indie

Palia
Shared: Free to Play · Indie · Free To Play

Poppy Playtime
Shared: Free to Play · Indie

IdleOn - The Incremental MMO
Shared: Free to Play · Indie · Free To Play