Games like 幻想序章: Genesis
Games like 幻想序章: Genesis include The Last Spell, Balatro, Slay the Spire 2, Mewgenics, and Plants vs. Zombies GOTY Edition. We matched them by the tags players give 幻想序章: Genesis on Steam (Strategy, Singleplayer, 2D, Turn-Based Combat, and Casual): closest matches first, and among equally close ones the better-known games.

The Last Spell
Shared: Strategy · Singleplayer · Turn-Based Strategy

Balatro
Shared: Singleplayer · Strategy · Card Game

Slay the Spire 2
Shared: Strategy · Card Game · Turn-Based Combat

Mewgenics
Shared: Roguelite · Turn-Based Combat · Turn-Based Strategy

Plants vs. Zombies GOTY Edition
Shared: Strategy · Singleplayer · Casual

Library Of Ruina
Shared: Strategy · Turn-Based Combat · Singleplayer

RACCOIN: Coin Pusher Roguelike
Shared: Strategy · Singleplayer · Casual

STAR WARS Zero Company™
Shared: Singleplayer · Strategy · Turn-Based Strategy

Warriors of the Nile
Shared: Strategy · Singleplayer · Turn-Based Combat

Into the Breach
Shared: Strategy · Turn-Based Strategy · Singleplayer

Your Only Move Is HUSTLE
Shared: Strategy · Turn-Based Strategy · 2D Fighter

Ballionaire
Shared: Singleplayer · 2D · Strategy

Slay the Spire
Shared: Strategy · Singleplayer · Card Game

Game Dev Tycoon
Shared: Strategy · Singleplayer · Casual

XCOM 2
Shared: Strategy · Turn-Based Combat · Singleplayer

Jagged Alliance 3
Shared: Strategy · Turn-Based Combat · Turn-Based Strategy

Bloons TD 6
Shared: Strategy · Singleplayer · Casual

Vampire Survivors
Shared: 2D · Roguelite · Singleplayer

Darkest Dungeon® II
Shared: Singleplayer · Roguelite · Turn-Based Combat

Legends of Kingdom Rush
Shared: Turn-Based Strategy · Turn-Based Combat · Strategy

Roguebook
Shared: Singleplayer · Strategy · Card Game

Plague Inc: Evolved
Shared: Strategy · Singleplayer · Casual

XCOM®: Chimera Squad
Shared: Strategy · Singleplayer · Turn-Based Strategy

Fell Seal: Arbiter's Mark
Shared: Strategy · Turn-Based Combat · Turn-Based Strategy