Games like Tentacult!
Games like Tentacult! include Florence, Pikuniku, There Is No Game: Wrong Dimension, Call of the Sea, and Chained Together. We matched them by the tags players give Tentacult! on Steam (Casual, Adventure, Indie, and Lovecraftian): closest matches first, and among equally close ones the better-known games.

Florence
Shared: Casual · Indie · Adventure

Pikuniku
Shared: Adventure · Casual · Indie

There Is No Game: Wrong Dimension
Shared: Indie · Adventure · Casual

Call of the Sea
Shared: Adventure · Lovecraftian · Indie

Chained Together
Shared: Adventure · Casual · Indie

Donut County
Shared: Casual · Indie · Adventure

Melvor Idle
Shared: Casual · Indie · Adventure

泡沫冬景
Shared: Casual · Adventure · Indie

A Short Hike
Shared: Adventure · Indie · Casual

Journey
Shared: Adventure · Indie · Casual

Wobbly Life
Shared: Adventure · Casual · Indie

Across the Obelisk
Shared: Casual · Adventure · Indie

Dream Ending
Shared: Casual · Indie · Adventure

That's not my Neighbor
Shared: Casual · Adventure · Indie

Moncage
Shared: Casual · Indie · Adventure

Home Behind
Shared: Adventure · Casual · Indie

Tick Tock: A Tale for Two
Shared: Adventure · Casual · Indie

Epiphyllum in Love
Shared: Casual · Adventure · Indie

DAVE THE DIVER
Shared: Casual · Adventure · Indie

The Room Three
Shared: Adventure · Indie · Lovecraftian

Cyberhunt
Shared: Casual · Indie · Adventure

Iris.Fall
Shared: Adventure · Casual · Indie

Pinstripe
Shared: Adventure · Casual · Indie

Thank Goodness You're Here!
Shared: Adventure · Casual · Indie