Is Jerma's Big Adventure free?

Yes — Jerma's Big Adventure is free to play, so you can install and play it without buying anything.

Is Jerma's Big Adventure Steam Deck verified?

Yes. Valve has tested Jerma's Big Adventure and rates it Verified: it runs well on Steam Deck out of the box, with default controls and readable text.

Can I play Jerma's Big Adventure on Mac?

Not natively — Steam lists no macOS version of Jerma's Big Adventure. Mac players would need a cloud gaming service or a Windows compatibility layer.

Is Jerma's Big Adventure multiplayer?

No — Steam lists Jerma's Big Adventure as single-player only.

Is Jerma's Big Adventure on PC Game Pass?

No — Jerma's Big Adventure is not on PC Game Pass right now.

Jerma's Big Adventure

Name: Jerma's Big Adventure
Brand: worblir
Availability: InStock

worblir · August 27, 2021 · Comedy, 2D Platformer, Dinosaurs, Baseball, Hack and Slash

Jerma's Big Adventure is free to play — no purchase needed. We track it so you know if that ever changes.

Overwhelmingly Positive98% · 1,389

Best price

Free

Get it free on Steam

This game is free to play. Get it on Steam →

Screenshots

Jerma's Big Adventure price

Jerma's Big Adventure is free to play — there is no purchase price, on Steam or anywhere else we track. We keep watching it, so if it ever stops being free the price history on this page will show when that happened and what it changed to.

About Jerma's Big Adventure

✦ AI summary

Jerma's Big Adventure is a 2D platformer where you fight your way out of a dark cavern armed with a baseball bat, battling laser-shooting robot dinosaurs and electric warlocks while the live chat reacts to your every move. This fan-made adventure stands out with its wacky Jerma universe references, projectile combat system, multiple endings, and a scoring system based on audience reactions and hidden secrets.

Oh no!

What began as a normal, innocuous stream for renown internet clown Jerma985—the shpee guy—ended in DISASTER when in an unforeseeable freak accident, Jerma came tumbling down to the deep depths of a dark, spooky cavern.

Armed with only his trusty baseball bat, Jerma must fight his way through hordes of laser-shooting ROBOT dinosaurs and EVIL electric warlocks to escape the treacherous cave alongside reactions from a live studio chat!

FEATURES

Wacky references to Jerma985 and the extended Jerma universe
A new "story"-driven adventure
Three unique endings
A projectile-based 2D-platformer combat system
"Audience" reactions and a "funnies" scoring system
A large amount of Jerma noises
Many hidden secrets
Slots
Rats (?)
A PSYCHO difficulty mode
Wacky cheats

Disclaimer: This game is unaffiliated with Jerma985, was not commissioned by him, and does not represent his views. This is a completely free fan-project made for fun by a solo developer.

Jerma's Big Adventure — game info

Platforms: Windows
Steam Deck: Verified
Player modes: Single-player
Controller: Full controller support
PC Game Pass: Not included

More games like this:Steam Deck verified games Games with full controller support

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Sep 12, 2026

Randomly stumbled on this game high off my gourd, but got around to playing it. This brought back memories and even though the game is short, it was good non the less. Brought up some of the FUNNIEST memories with Jermas quotes and honorable mentions. Honestly not a bad time.

Recommended Sep 1, 2026

good

Not recommended Aug 26, 2026

Not fun.

Recommended Aug 25, 2026

pretty boring and undercooked but since it's free i guess i can't really complain.

Recommended Aug 24, 2026

its germs

Recommended Aug 17, 2026

The rat is in this

Community reviews

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