Gelatinous: Humanity Lost

Development Update 3/11/2021

Greetings, Goo Crew! It’s been far too long since our last update. If you want more content from the team, you should follow us on Twitter .

If you’ve been worried about Gelatinous, you can stop now. The game is still very much under development, and still on track to release this year.

We’ve powered through much of the core gameplay development (John did, anyway), and all of the attacks and movements are pretty much set.

The levels are all designed (except for one very special one we’ll talk about another time), and we’re in the process of making some really cool bosses for you to battle! Boss creation has been the slowest and most complicated part of this process yet, as we really want to provide players with something unique.

Concept for one of the bosses

With just a few more major dev milestones left, it’s time to really start focusing on promotion and production. We are still planning a Kickstarter campaign to get Gelatinous funded upfront and offer some nifty rewards for those who want to help us get this project off the ground.

More on the Kickstarter campaign later. More on everything later, really. Just stay tuned for more updates!

Thanks and talk soon!

Development Update 12/18/2020

As 2020 wraps up (finally!), we are happy to say that Gelatinous: Humanity Lost is in a great place. But there’s still a lot to do. Like, a LOT to do! It’s too early to give an official completion date, but we are targeting the first quarter of 2021.

Most major gameplay mechanics are in place, and the first stage is entering the playtesting phase. We’ve got more than half the game mapped out with art, enemies, traps, and treasure. It’s coming along!

The biggest challenge to development has been working around the strict limitations that Game Boy development imposes. We have a ton of big, epic ideas that we simply can’t put into a Game Boy game. But don’t worry; all those ideas are going into a bucket and will certainly find their way into our next game.

In addition to more or less constant game design and development, we are brewing a Kickstarter campaign to try to get more revenue and get physical copies produced, with all the trimmings you’d expect from a brand-new Game Boy game. Stretch goals will include a fold-out map, strategy guide, mini comic, and who knows what else?

And finally, we are putting tons of thought into the in-game extras and bonuses that you’d expect from an official release. We’ve played enough indie games to understand the difference between a good game and a professional game. We want to deliver the best, most polished, most professional product to our fans. So stay tuned and follow us on Twitter to get all the latest Slime News.


Steven & John

Introducing Gelatinous: Humanity Lost, a brand new experience for your Game Boy.
Coming soonish.

Gelatinous: Humanity Lost is a brand new game for the Nintendo Game Boy slated for release in the first quarter of 2021.

With inspirations ranging from Mega Man and Metroid to Mario and Castlevania, Gelatinous promises innovative action in an original setting. Begin the game powerless and learn to navigate your environment however you can as you explore and unlock new powers.

Published in association with Pop Decades, Gelatinous is a collaboration between Quest Arrest creator John “Retro Room” Roo and Steven Long, owner of


Gelatinous Facts

Release Date:
projected Q2, 2021

Developed By:
John Roo and Steven Long

Game Boy (Initial Launch)
Additional platforms to follow

Retro adventure platforming

Previous Work:
Quest Arrest, Game Boy
(John Roo developer)


Steven Long
(Art, Maps, Creative Direction)

John Roo
(Lead Developer, Designer, Producer)