Games like Luna's Twilight
Games like Luna's Twilight include Florence, LoveChoice, Until Then, Tricolour Lovestory, and Doki Doki Literature Club Plus!. We matched them by the tags players give Luna's Twilight on Steam (Interactive Fiction, Romance, Casual, Visual Novel, and Otome): closest matches first, and among equally close ones the better-known games.

Florence
Shared: Casual · Romance · Interactive Fiction

LoveChoice
Shared: Romance · Visual Novel · Story Rich

Until Then
Shared: Visual Novel · Interactive Fiction · Romance

Tricolour Lovestory
Shared: Visual Novel · Casual · Romance

Doki Doki Literature Club Plus!
Shared: Visual Novel · Romance · Anime

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

Lucy -The Eternity She Wished For-
Shared: Visual Novel · Romance · Story Rich

To the Moon
Shared: Interactive Fiction · Story Rich · Romance

ATRI -My Dear Moments-
Shared: Visual Novel · Romance · Casual

Lay a Beauty to Rest: The Darkness Peach Blossom Spring
Shared: Visual Novel · Interactive Fiction · Adventure

Fox Hime Zero
Shared: Visual Novel · Romance · Casual

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

Mirror 2: Project X
Shared: Interactive Fiction · Visual Novel · Casual

My Vow to My Liege
Shared: Romance · Visual Novel · Otome

Love Delivery
Shared: Casual · Visual Novel · Simulation

Summer Pockets
Shared: Visual Novel · Casual · Adventure

Marco & The Galaxy Dragon
Shared: Visual Novel · Casual · Adventure

and Roger
Shared: Interactive Fiction · Romance · Visual Novel

Aokana - Four Rhythms Across the Blue
Shared: Visual Novel · Casual · Romance

Senren * Banka
Shared: Visual Novel · Casual · Romance

Vampires' Melody
Shared: Casual · Interactive Fiction · Visual Novel

There Is No Game: Wrong Dimension
Shared: Casual · Adventure · Interactive Fiction

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Visual Novel · Interactive Fiction · Story Rich

小白兔电商~Bunny e-Shop
Shared: Visual Novel · Simulation · Romance