• Register

Sonic Lost Adventure is a 3D Sonic fan game created in 4 months entirely by myself using Xaklse's Sonic GDK engine in UDK. The game is modeled after the gameplay and level design of the modern Sonic games--Sonic Unleashed (Day stages), Sonic Colors, Sonic Generations--and seeks to bring you a similar experience. Sonic Lost Adventure will only feature the one level, Havok Harbor, due to complications in my life. The current build is the same build that was shown at the SAGExpo 2014 Act 1 back in February. There is a newer build on the way that is seeking to fix all of the technical problems and bugs that were in this version as well as have custom music and that version will be released on August 3rd, 2014.

Before you start asking, no this game was not inspired by levels like Metal Harbor from Sonic Adventure 2. In fact, nothing in this game is related in any way to any other sonic title out there in terms of inspiration or concept.

You will need a decent computer to run this game properly.

There is an easter egg hidden in this game that hints towards my next project. Can you find it?
Thank you for playing and I hope you have a lot of fun!-Kevin Ethridge

Sonic the Hedgehog - SEGA
Sonic GDK - Xaklse
Sonic Model and animations - SEGA
Level design, environment assets, and textures - Kevin Ethridge
Level Music (Metal Harbor) - SEGA

  • View media
  • View media
  • View media
  • View media
  • View media
  • View media
Post article RSS Articles

Version 1.1 is coming soon!


So I've been sitting back and watching game play videos and reading feedback regarding SLA for awhile now and I know what the game needs to be better than it already currently is. The bugs desperately need to get sorted out and I need to implement a better way to teach players how to play the game. Apparantly no one reads the manual labeled "HOW TO PLAY READ ME DAMN IT" included in every .rar bundle thats downloaded by you guys so I need a new method. The next release of SLA will include a tutorial level designed with the intention of telling you what buttons do what and how SLA is intended to be played. Hopefully this will make it easier for people to jump right into the actual game and have the potential to play out Havok Harbor to the fullest of your ability and have a better time than just getting thrown in blind. Of course it will be optional so if you want to jump right in with no idea as to what you are doing, you can go ahead and do that.
The bugs absolutely will be ironed out in the next release as that is the single biggest problem with the game right now. I've seen far too many videos of people not even being able to finish the level due to the amount of bugs that can happen, and thats just unacceptable.
I am also hoping to get some original music done for the game as well, but its not a high priority with this release. If I am able to get some original music in, I'm planning on having an interactive music engine put in with it. What that basically will do is change the music as the level progresses to really amp up the player experience.
This update won't be available for a while though, so theres still some waiting to do. I'm planning on releasing v1.1 at this years SAGExpo Act 2 which starts on Aug 3rd which is about a month and a half away. I hope you guys will check it out and be pleased with the update when it comes out.
Thanks for playing SLA if you have and if you haven't please give it a try, I've worked rather hard on it and I hope you enjoy it!

Thats all for now, I'll be posting news if I have anything big to share.

TSSZnews Interview regarding Sonic Lost Adventure

TSSZnews Interview regarding Sonic Lost Adventure

News 1 comment

TSSZnews' Micheal Westgarth interviewed me about Sonic Lost Adventure's debut and about my upcoming projects.

 Sonic Adventure needs YOU!

 Sonic Adventure needs YOU!

Feature 1 comment

Sega is destroying Sonic and whilst the world begs for a new 'Sonic Adventure' I want to fill that void and create a production that will create a lucrative...

RSS Files
Sonic Lost Adventure: Havok Harbor v1.2

Sonic Lost Adventure: Havok Harbor v1.2

Demo 5 comments

Bug fixes, level tweeks, a new tutorial, and more in this new version.

SLA SAGE 2014 Act 1 Demo

SLA SAGE 2014 Act 1 Demo

Demo 1 comment

This game is the same release seen at SAGExpo 2014 Act 1


This is just a rar file but i dont want to get winrar becasue it installs a toolbar

Reply Good karma Bad karma+1 vote

This comment is currently awaiting admin approval, join now to view.


This comment is currently awaiting admin approval, join now to view.


Yay, +Watched

Reply Good karma Bad karma+1 vote

very good demo :D My Let´s Play Youtu.be

Reply Good karma Bad karma+1 vote

i can't play it beacuse it's a rar file! will you release a .exe file?

Reply Good karma Bad karma0 votes

This comment is currently awaiting admin approval, join now to view.


wow this looks ******* awesome!

Reply Good karma Bad karma+2 votes
Post a comment
Sign in or join with:

Only registered members can share their thoughts. So come on! Join the community today (totally free - or sign in with your social account on the right) and join in the conversation.

Follow Report Profile
Sonic Lost Adventure: Havok Harbor
Kevin Ethridge
Send Message
Release date
Game watch
Community Rating



2 votes submitted.

You Say


Ratings closed.

Single Player

Latest tweets from @highwire4

RT @sseddie13: I had to do a sprite of Bowsette...Everyone is required to do art of Bowsette. It's an epidemic. #BowsetteT.co

3hours ago

RT @emilybuckshot: Seen some really great hot takes about how the strength of this hashtag means we will all be fine. I have at least… T.co

15hours ago

RT @dennis_lenart: I’ve always been more inclined toward images than words so I put together a few clips of my own #TelltaleMemories f… T.co

17hours ago

RT @natasharothwell: I feel like we’re all in a super shitty Escape Room with really obvious clues like, “vote” and “believe women” and… T.co

17hours ago

RT @SinksAdventure: lately i have been making video games again! i feel really refreshed after such a long break and im having a lot of… T.co

17hours ago

RT @MaxPears: A #leveldesign #tip (sorry for bad drawings) when creating landmarks to help it stand out make sure the buildings a… T.co

17hours ago

RT @ProgressBar201X: 2018 is 73% complete. T.co

17hours ago

RT @leighalexander: thread T.co

17hours ago

RT @shaunfinney: Now that there's pretty much no consequences for posting this, enjoy this dumb shit I made in the chore tool while… T.co

17hours ago

RT @Ro_Reveur: If you like someone’s work, tell them. Your words could be the deciding factor between giving up or sticking to the… T.co

18hours ago

Embed Buttons
Link to Sonic Lost Adventure: Havok Harbor by selecting a button and using the embed code provided more...
Sonic Lost Adventure: Havok Harbor
Last Update
21 members
You may also like
Xenno The Rogue
Xenno The Rogue Platformer
Jarvis Platformer
Clive 'N' Wrench
Clive 'N' Wrench Platformer
SonicGDK Platformer
Tower Fortress
Tower Fortress Platformer