Games like The Unlikely Prometheus
Games like The Unlikely Prometheus include Deponia, Return to Monkey Island, There Is No Game: Wrong Dimension, Thimbleweed Park™, and Deponia: The Complete Journey. We matched them by the tags players give The Unlikely Prometheus on Steam (Point & Click, Adventure, 2D, Story Rich, and Hand-drawn): closest matches first, and among equally close ones the better-known games.

Deponia
Shared: Point & Click · Adventure · Comedy

Return to Monkey Island
Shared: Point & Click · Adventure · Comedy

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

Thimbleweed Park™
Shared: Point & Click · Adventure · Pixel Graphics

Deponia: The Complete Journey
Shared: Point & Click · Adventure · Comedy

The Darkside Detective
Shared: Point & Click · Adventure · Story Rich

Finding Paradise
Shared: Adventure · Story Rich · 2D

Papers, Please
Shared: Point & Click · Pixel Graphics · Story Rich

Broken Age
Shared: Point & Click · Adventure · Story Rich

Chaos on Deponia
Shared: Point & Click · Adventure · Comedy

SANABI
Shared: Story Rich · Adventure · Pixel Graphics

Deponia Doomsday
Shared: Point & Click · Adventure · Story Rich

The Rewinder
Shared: Adventure · 2D · Pixel Graphics

Impostor Factory
Shared: Story Rich · Adventure · 2D

Goodbye Deponia
Shared: Point & Click · Adventure · Comedy

The Secret of Monkey Island: Special Edition
Shared: Point & Click · Adventure · Comedy

Machinarium
Shared: Point & Click · Hand-drawn · 2D

Undertale
Shared: Story Rich · Pixel Graphics · 2D

DELTARUNE
Shared: Story Rich · Pixel Graphics · 2D

To the Moon
Shared: Story Rich · Adventure · Pixel Graphics

Grim Fandango Remastered
Shared: Point & Click · Adventure · Story Rich

The Dark Eye: Memoria
Shared: Point & Click · Adventure · Story Rich

Tales from the Borderlands
Shared: Adventure · Story Rich · Comedy

Beat Cop
Shared: Adventure · Pixel Graphics · Retro