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Sonic Robo Blast 2 is a 3D open-source Sonic the Hedgehog fangame built using a modified version of the Doom Legacy port of Doom. SRB2 is closely inspired by the original Sonic games from the Sega Genesis, and attempts to recreate the design in 3D. While SRB2 isn't fully completed, it already features tons of levels, enemies, speed, and quite a lot of the fun that the original Sonic games provided.

Download and experience Sonic Robo Blast 2 today!

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News Updates
Releases :: Development :: Website :: Other :: Archive

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Summer 2020 OLDC Results

SeventhSentinel - October 14, 2020

Hello everybody! The Summer 2020 Official Level Design Contest has come to a close. We are taken aback by the enthusiasm of the mappers in our community. This is the largest contest yet with 41 maps! Let’s check out the winning maps.

The winner of the Single Player division is Oasis Palace Zone by so2ro. This large map features path splits, secrets, and even emblems to give you plenty of replay value. The main path is pretty straightforward, so you won’t get too lost. Though some rooms look similar, the visuals are quite pleasing overall. Oasis Palace Zone makes frequent use of dust devils as a means of progression. Although the dust devils are used similarly throughout the stage, they give the level a good sense of flow. Enemy placement is also a strength here — BASHes, Crushtaceans, and Green Snappers keep you on your toes without being too much of a nuisance. Overall, Oasis Palace is definitely worth your time to check out. Congratulations, so2ro!

Oasis Palace Zone by so2ro

I haven’t personally been able to make time to play any of the multiplayer maps, but the other winning maps look pretty cool! Let’s congratulate the rest of the winners:

Congratulations to Revan for winning the Match division with Crystalline Heights Zone!
Congratulations to JABSphere94 for winning the Circuit division with HydroWing Zone!
Congratulations to Krabs for winning the Arena and Battle CTF divisions with Gravity Station Zone and Serene Shore Zone!
And finally, congratulations to happyalm for winning the Battle division with Glimmer Gulch Zone!

Crystalline Heights Zone by Revan

You can check the full contest results here.

If you haven’t checked out this season’s contest pack yet, click here to visit its release post.

The deadline for the Autumn OLDC is November 30th, 2020 at 23:59 UTC. We hope to see even more maps this time!

Thanks to everyone who submitted maps and/or voted on them. Without you, there would be no contest at all! See you in December!

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SRB2 v2.2.8 Patch Release

SeventhSentinel - October 4, 2020

Hello everybody! Another update is here.

When we released v2.2.7, we accidentally broke the -file command line parameter — loading Lua scripts that added netvars via the -file parameter would lead to desyncs. This mostly impacted players on dedicated servers. The issue has been rectified.

We also broke PNG graphics in the OpenGL renderer, causing some mods to instantly crash in OpenGL. This has also been fixed.

Android users will be happy to hear we fixed the issue with the server browser. You should be able to join netgames as normal again.

This patch also has some other minor fixes, which you can read about on the full changelog.

Windows users: since v2.2.7 was so short-lived, we have made sure the new patch will work with both v2.2.6 and v2.2.7, just in case you missed our last patch. Remember, you can use the links to the zip files containing the game files if you don’t want to use the installers or if you experience problems with them. They’re in the fine print right under the links to the installers.

We appreciate your continued support as we strive to improve our favorite game. Zip over to the usual place to get the new patch.

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SRB2 Version 2.2.7 Patch Release

SeventhSentinel - September 30, 2020

Hello everybody! We’ve got another new update for you!

Since we had so much help from public testing, we were able to fix a lot of bugs. Thank you so much! We’ve also added some cool new features, such as:

  • Built-in skincolors may now be changed.
  • Added the netticbuffer cvar. This stores some inputs in a buffer in case the network is slow, exchanging netcode induced lag for input delay.
  • (OpenGL) Model Lighting now works when shaders are enabled.
  • Added a menu option to show joiner’s IP addresses.
  • New Master Server technology, bringing more uptime and smoother menus.
  • Optimized loading of PNG graphics, greatly reducing the load time of levels that happen to use PNGs.
  • Players can no longer change their name more than five times per minute.
  • Added a new Black Eggman sprite render by SuperPhanto.
  • 3D models made by Jeck Jims are now included with the game.

You can read the full changelog here.

Windows users: we have also changed from the stinky old 7-zip self extracting archive to a shiny new professional installer that supports four languages. Patching the game from here on out should be faster and easier. We are also including full installers for every single update moving forward. (We will still provide zip archives for those that need/prefer them.) We hope these changes benefit new players and our non-English communities. We would like to extend our thanks for ACStriker and yfyfyfyfyfy for the Spanish and Russian translations of the installers, respectively.

That’s it! What are you waiting for? Head to the Downloads page already!

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OLDC Summer 2020 Released

SeventhSentinel - September 8, 2020

Hello everybody! The Official Level Design Contest for summer 2020 is now open for voting. Download the levels and find details about the voting process in its release & discussion thread.

Voting closes on September 23, 2020 at 7pm Eastern Standard Time. Be sure to get your votes in before then! See you in cyberspace…

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Beta Testing Now Open

SeventhSentinel - September 1, 2020

Hello everybody! I’m pleased to announce that we have opened beta testing for future versions of SRB2. If you would like to help us find bugs and other problems, head on over to our Discord server and check out the new #public-testing channel. There you will find the newest release candidates of the game. We just finished uploading the first pre-release for v2.2.7 there, so come join the fun!

Stable builds will still be linked here on, and will remain available for new users to download the latest stable version of the game. Both stable and pre-release versions should be able to connect to the Master Server.

Regardless of whether or not you decide to join us for testing, thanks for playing!

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OLDC Deadline Extension

SeventhSentinel - August 31, 2020

Hello everybody! Since the message board is acting up, we’re giving everyone an extra 24 hours to submit their OLDC entries. The new deadline is September 1st at 23:59 UTC. Hopefully the MB decides to cooperate by then. Fingers crossed.

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New Message Board Rules

SeventhSentinel - August 8, 2020

We have overhauled our message board rules. Please read them over!

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The OLDC Returns

SeventhSentinel - July 19, 2020

Hi everyone! I was going to sit down and write a nice, long post about the return of the Official Level Design Contest, but I meant to do this days ago, so instead I’ll let you read the announcement about it on the message board.

Basically, if you want the chance to earn a shiny gold username on the MB, submit a brand new map by August 31st! Good luck and have fun!

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SRB2 Version 2.2.6 Patch Release

SeventhSentinel - July 10, 2020

Things don’t always go as planned. Therefore, we’ve brought you another new patch, available on our Downloads page as usual. You will now be able to finish Black Core zone in unmodified single player! (Sorry we missed that.) We’ve also fixed some other small bugs and made some minor adjustments to Marathon Run.

You can read the full changelog here. Enjoy!

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SRB2 Version 2.2.5 Patch Release

SeventhSentinel -

Hi everyone! Go grab our latest update from the downloads page!

We’ve got some great new features for you, including:

  • Shadows now render on the ceiling in reverse gravity.
  • The game now saves as the level ends. If you exit a special stage and re-enter the game, you will be in the next level.
  • You can now play as any character in NiGHTS mode.
  • You can now use SOC and Lua to make custom skincolors.
  • OpenGL has received an overhaul, resulting in performance improvements and shader support. The game ships with some shaders, but if your machine can’t handle them, you can turn them off.
  • Updated music for the tracks originally sourced from Mystic Realm.
  • We added Marathon Mode. It’s for full game speedruns. Find it under the 1 Player menu. We also included options for Ultimate Mode and for creating a backup to come back to if the game crashes during a live event.
  • Knuckles no longer crouches for as long after landing from a glide, making him lose less momentum and feel a little less chunky. He can swim underwater, too, which controls differently from gliding. We gave him a little something extra, too…

Play the video to see these features in action!

See the full changelog here. Enjoy the update!

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