Games like Abyssal Frontier
Games like Abyssal Frontier include Slay the Princess — The Pristine Cut, Scarlet Hollow, Who's Lila?, The NOexistenceN of you AND me, and Doki Doki Literature Club Plus!. We matched them by the tags players give Abyssal Frontier on Steam (Interactive Fiction, Psychological Horror, Visual Novel, Horror, and Choose Your Own Adventure): closest matches first, and among equally close ones the better-known games.

Slay the Princess — The Pristine Cut
Shared: Visual Novel · Psychological Horror · Horror

Scarlet Hollow
Shared: Visual Novel · Psychological Horror · Horror

Who's Lila?
Shared: Psychological Horror · Horror · Interactive Fiction

The NOexistenceN of you AND me
Shared: Psychological Horror · Visual Novel · Interactive Fiction

Doki Doki Literature Club Plus!
Shared: Psychological Horror · Visual Novel · Dating Sim

Tiny Bunny
Shared: Visual Novel · Horror · Psychological Horror

The Test: Final Revelation
Shared: Choose Your Own Adventure · Visual Novel · Psychological Horror

Hooked on You: A Dead by Daylight Dating Sim™
Shared: Psychological Horror · Visual Novel · Choose Your Own Adventure

Milk inside a bag of milk inside a bag of milk
Shared: Psychological Horror · Visual Novel · Horror

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Interactive Fiction · Dating Sim

OMORI
Shared: Psychological Horror · RPG · Horror

Suzerain
Shared: Visual Novel · Interactive Fiction · Choose Your Own Adventure

Breakout 13
Shared: Interactive Fiction · Choose Your Own Adventure · Exploration

The Coffin of Andy and Leyley
Shared: Visual Novel · Psychological Horror · Multiple Endings

The Test: Hypothesis Rising
Shared: Horror · Visual Novel · Psychological Horror

The Test
Shared: Choose Your Own Adventure · Psychological Horror · Visual Novel

Our Life: Beginnings & Always
Shared: Visual Novel · Choose Your Own Adventure · Dating Sim

NEEDY STREAMER OVERLOAD
Shared: Psychological Horror · Visual Novel · Anime

Homicipher
Shared: Visual Novel · Horror · Choose Your Own Adventure

Ib
Shared: Horror · Psychological Horror · Exploration

Love Is All Around
Shared: Visual Novel · Dating Sim · Interactive Fiction

School Days
Shared: Exploration · Choose Your Own Adventure · Dating Sim

Aliya: Timelink
Shared: Interactive Fiction · Visual Novel · RPG

The Weeping Swan: Ten Days of the City's Fall
Shared: Interactive Fiction · Visual Novel · Psychological Horror