Games like Happy Birthday: With Sergio Spellbound
Games like Happy Birthday: With Sergio Spellbound include There Is No Game: Wrong Dimension, The Henry Stickmin Collection, Deponia, Return to Monkey Island, and Tales from the Borderlands. We matched them by the tags players give Happy Birthday: With Sergio Spellbound on Steam (Comedy, Adventure, Point & Click, Multiple Endings, and Interactive Fiction): closest matches first, and among equally close ones the better-known games.

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

The Henry Stickmin Collection
Shared: Multiple Endings · Comedy · Funny

Deponia
Shared: Adventure · Comedy · Point & Click

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

Tales from the Borderlands
Shared: Comedy · Adventure · Point & Click

Undertale
Shared: Multiple Endings · Comedy · Funny

No Case Should Remain Unsolved
Shared: Point & Click · Interactive Fiction · Adventure

Broken Age
Shared: Adventure · Point & Click · Comedy

Death and Taxes
Shared: Multiple Endings · Point & Click · Choices Matter

Otaku's Adventure
Shared: Multiple Endings · Adventure · Funny

The Wolf Among Us
Shared: Adventure · Multiple Endings · Point & Click

Randal's Monday
Shared: Adventure · Comedy · Point & Click

Little Inferno
Shared: Casual · Comedy · Puzzle

Fever Meme
Shared: Comedy · Multiple Endings · Funny

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

The Darkside Detective
Shared: Point & Click · Adventure · Comedy

The Stanley Parable
Shared: Comedy · Adventure · Multiple Endings

Edna & Harvey: Harvey's New Eyes
Shared: Adventure · Point & Click · Comedy

McPixel
Shared: Comedy · Point & Click · Adventure

Little Misfortune
Shared: Point & Click · Adventure · Choices Matter

Puzzle Agent
Shared: Point & Click · Casual · Adventure

Thimbleweed Park™
Shared: Adventure · Point & Click · Comedy

Kindergarten 3
Shared: Dark Humor · Comedy · Interactive Fiction

Storyteller
Shared: Point & Click · Adventure · Interactive Fiction