Games like Anna - Extended Edition
Games like Anna - Extended Edition include Little Nightmares, Layers of Fear (2016), Little Nightmares II, Firewatch, and What Remains of Edith Finch. We matched them by the tags players give Anna - Extended Edition on Steam (Horror, Adventure, Indie, Atmospheric, and Puzzle): closest matches first, and among equally close ones the better-known games.

Little Nightmares
Shared: Horror · Adventure · Atmospheric

Layers of Fear (2016)
Shared: Horror · Atmospheric · Psychological Horror

Little Nightmares II
Shared: Horror · Adventure · Puzzle

Firewatch
Shared: Adventure · Atmospheric · Story Rich

What Remains of Edith Finch
Shared: Atmospheric · Adventure · Story Rich

Poppy Playtime
Shared: Horror · Puzzle · Singleplayer

MiSide
Shared: Horror · Psychological Horror · Story Rich

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

SOMA
Shared: Horror · Atmospheric · Psychological Horror

Outer Wilds
Shared: Adventure · Atmospheric · Puzzle

Fran Bow
Shared: Horror · Psychological Horror · Adventure

Outlast
Shared: Horror · Atmospheric · First-Person

Detention
Shared: Horror · Indie · Atmospheric

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

The Room Two
Shared: Puzzle · Horror · Atmospheric

Rusty Lake Paradise
Shared: Indie · Adventure · Puzzle

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

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

Servant of the Lake
Shared: Adventure · Puzzle · Indie

Among the Sleep - Enhanced Edition
Shared: Horror · Indie · Adventure

Samsara Room
Shared: Indie · Adventure · Puzzle

The Room
Shared: Puzzle · Atmospheric · Adventure

Blair Witch
Shared: Horror · Adventure · Indie

Return of the Obra Dinn
Shared: Puzzle · Atmospheric · Indie

