Games like Fishing
Games like Fishing include Escape From Duckov, Melvor Idle, There Is No Game: Wrong Dimension, Grand Theft Auto V Legacy, and PUBG: BATTLEGROUNDS. We matched them by the tags players give Fishing on Steam (Casual, Adventure, Shooter, Point & Click, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Escape From Duckov
Shared: Adventure · Shooter · Top-Down Shooter

Melvor Idle
Shared: Casual · Adventure · Idler

There Is No Game: Wrong Dimension
Shared: Adventure · Point & Click · Casual

Grand Theft Auto V Legacy
Shared: Shooter · Adventure · Action

PUBG: BATTLEGROUNDS
Shared: Shooter · Third-Person Shooter · Adventure

Thank Goodness You're Here!
Shared: Adventure · Casual · 2D Platformer

Caster
Shared: Adventure · Casual · Third-Person Shooter

That's not my Neighbor
Shared: Casual · Adventure · Point & Click

12 is Better Than 6
Shared: Shooter · Top-Down Shooter · Adventure

Pikuniku
Shared: Adventure · Casual · Indie

Just Cause™ 3
Shared: Shooter · Adventure · Third-Person Shooter

Red Dead Redemption 2
Shared: Adventure · Shooter · Action

Chill with You : Lo-Fi Story
Shared: Casual · Adventure · Idler

Lair of the Clockwork God
Shared: Adventure · Casual · Point & Click

McPixel 3
Shared: Adventure · Point & Click · Casual

Aimlabs
Shared: Shooter · Third-Person Shooter · Adventure

Broken Age
Shared: Adventure · Point & Click · Casual

Tomb Raider Game of the Year
Shared: Adventure · Third-Person Shooter · Action

Cyberhunt
Shared: Casual · Adventure · Indie

Cookie Clicker
Shared: Casual · Idler · Indie

Marvel Rivals
Shared: Third-Person Shooter · Shooter · Casual

Machinarium
Shared: Point & Click · Adventure · Casual

Sonic Superstars
Shared: Adventure · Casual · 2D Platformer

The Ascent
Shared: Top-Down Shooter · Shooter · Adventure