Games like Lempo
Games like Lempo include Poppy Playtime, Outlast, Garten of Banban, SOMA, and Outlast 2. We matched them by the tags players give Lempo on Steam (Horror, Mythology, Psychological Horror, Mystery, and Dark): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

Outlast
Shared: Horror · Psychological Horror · Survival Horror

Garten of Banban
Shared: Horror · Psychological Horror · First-Person

SOMA
Shared: Horror · Psychological Horror · Dark

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

Garten of Banban 2
Shared: Horror · Psychological Horror · Dark

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Walking Simulator

Bendy and the Ink Machine
Shared: Horror · First-Person · Dark

Visage
Shared: Horror · Psychological Horror · Dark

Five Nights at Freddy's
Shared: Horror · Psychological Horror · Survival Horror

Inside the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Survival Horror

Amnesia: A Machine For Pigs
Shared: Horror · Walking Simulator · Psychological Horror

Slender: The Arrival
Shared: Horror · Psychological Horror · Survival Horror

What Remains of Edith Finch
Shared: Mystery · Walking Simulator · First-Person

Garten of Banban 3
Shared: Horror · Psychological Horror · First-Person

From The Darkness
Shared: Horror · Psychological Horror · Dark

Sally Face - Episode One
Shared: Psychological Horror · Horror · Dark

Five Nights at Freddy's 2
Shared: Horror · Psychological Horror · Survival Horror

Phasmophobia
Shared: Horror · Psychological Horror · Dark

Escape the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Little Nightmares
Shared: Horror · Dark · Psychological Horror

Blair Witch
Shared: Horror · Psychological Horror · Dark

Little Nightmares II
Shared: Horror · Dark · Psychological Horror