Games like Tennis Story
Games like Tennis Story include Detroit: Become Human, Martial Law, Before Your Eyes, Until Then, and To the Moon. We matched them by the tags players give Tennis Story on Steam (Tennis, Emotional, Multiple Endings, Story Rich, and Free to Play): closest matches first, and among equally close ones the better-known games.

Detroit: Become Human
Shared: Multiple Endings · Story Rich · Emotional

Martial Law
Shared: Multiple Endings · Free to Play · Story Rich

Before Your Eyes
Shared: Emotional · Story Rich · Walking Simulator

Until Then
Shared: Emotional · Story Rich · Visual Novel

To the Moon
Shared: Story Rich · Emotional · Adventure

ATRI -My Dear Moments-
Shared: Story Rich · Visual Novel · Multiple Endings

Mirror 2: Project X
Shared: 3D · Multiple Endings · Visual Novel

The Wolf Among Us
Shared: Story Rich · Multiple Endings · Adventure

Persona 5 Royal
Shared: Story Rich · Multiple Endings · Emotional

Finding Paradise
Shared: Emotional · Story Rich · Adventure

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

Undertale
Shared: Story Rich · Multiple Endings · Pixel Graphics

The Coffin of Andy and Leyley
Shared: Multiple Endings · Story Rich · Visual Novel

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

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

CLANNAD
Shared: Story Rich · Multiple Endings · Visual Novel

Impostor Factory
Shared: Emotional · Story Rich · Adventure

Wuthering Waves
Shared: Free to Play · Story Rich · Adventure

The Test
Shared: Multiple Endings · Story Rich · Visual Novel

STEINS;GATE
Shared: Story Rich · Visual Novel · Multiple Endings

Coffee Talk
Shared: Story Rich · Visual Novel · Multiple Endings

What Remains of Edith Finch
Shared: Story Rich · Walking Simulator · Adventure

OneShot
Shared: Story Rich · Multiple Endings · Pixel Graphics

Copycat
Shared: Emotional · Story Rich · Adventure