Games like NSG
Games like NSG include Senren * Banka, CLANNAD, ATRI -My Dear Moments-, LoveChoice, and Volcano Princess. We matched them by the tags players give NSG on Steam (Visual Novel, Casual, Choices Matter, Anime, and Multiple Endings): closest matches first, and among equally close ones the better-known games.

Senren * Banka
Shared: Visual Novel · Anime · Casual

CLANNAD
Shared: Visual Novel · Anime · Multiple Endings

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

LoveChoice
Shared: Choices Matter · Visual Novel · Multiple Endings

Volcano Princess
Shared: Choices Matter · Multiple Endings · Visual Novel

Doki Doki Literature Club Plus!
Shared: Visual Novel · Anime · Multiple Endings

Far Away
Shared: Visual Novel · Choices Matter · Singleplayer

Lucy -The Eternity She Wished For-
Shared: Visual Novel · Anime · Multiple Endings

Mirror 2: Project X
Shared: Visual Novel · Anime · Multiple Endings

STEINS;GATE
Shared: Visual Novel · Anime · Choices Matter

Love Is All Around
Shared: Visual Novel · Singleplayer · Choices Matter

Fox Hime Zero
Shared: Visual Novel · Anime · Casual

An alt girl for skoof
Shared: Visual Novel · Anime · Casual

NEEDY STREAMER OVERLOAD
Shared: Visual Novel · Anime · Multiple Endings

Flowers Blooming at the End of Summer
Shared: Visual Novel · Casual · Anime

Emily is Away <3
Shared: Choices Matter · Casual · Multiple Endings

Love Delivery
Shared: Visual Novel · Casual · 2D

Love, Money, Rock'n'Roll
Shared: Visual Novel · Anime · Multiple Endings

Gaokao.Love.100Days
Shared: Visual Novel · Multiple Endings · Casual

Undertale
Shared: Choices Matter · Multiple Endings · Singleplayer

The NOexistenceN of you AND me
Shared: Visual Novel · Anime · Multiple Endings

Love Curse: Find Your Soulmate
Shared: Visual Novel · Choices Matter · Multiple Endings

Tiny Snow
Shared: Visual Novel · Casual · Anime

Fate/stay night REMASTERED
Shared: Visual Novel · Anime · Multiple Endings