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SonLVL-RSDK: Getting Started

Welcome to the SonLVL-RSDK setup guide! SonLVL-RSDK is a level editor designed for the Retro Engine versions of Sonic 1, Sonic 2, and Sonic CD, from editing existing levels to creating entirely brand new ones! This guide will walk you through setting everything up and getting SonLVL-RSDK started for the first time.

Step 1: Download SonLVL-RSDK

First, head over to the SonLVL-RSDK GameBanana page and download the latest version of the program. Once it’s downloaded, just extract the files to any folder on your computer.

Warning: Since SonLVL-RSDK works with multiple games, it’s best to keep it in its own folder. Don’t put it in the same folder as your game files - things can get a little messy that way!

SonLVL-RSDK on the GameBanana page.
An image of the SonLVL-RSDK GameBanana page, with SonLVL-RSDK.zip circled.

SonLVL-RSDK extracted into its own folder.
An image showing SonLVL-RSDK extracted into its own folder.

Step 2: Grab the Project Files for Your Game

Next, on the same page, grab the project files for the game you want to edit. For example, if you’re working with Sonic 1, download the Sonic1.zip file.

The project files on the GameBanana page. Pick the one that matches your game!
An image of the SonLVL-RSDK GameBanana page, with the game project files circled.

Extract the ZIP into the same folder as your game’s .exe file.

The extracted project files. Make sure they're right next to your game!
An image showing the project files extracted into the same folder as the game files.

Step 3: Open SonLVL-RSDK & Load Your Game

Now, open SonLVL-RSDK.exe. Drag and drop your game’s SonLVL project file (included in the previous step) into the program window. For example, if you’re working with Sonic 1, you would drag the Sonic1-SonLVL.ini file into the program (or Sonic2-SonLVL.ini for Sonic 2, or SonicCD-SonLVL.ini for Sonic CD, etc). Now your game should be loaded, and SonLVL-RSDK’s icon and title should show that!

Warning: Just make sure you’re dragging the SonLVL.ini file, not the settings.ini file (which is part of the game files, not SonLVL’s files, so you don’t wanna use that one!)

Just drag it over, and then..
An image showing the user dragging the Sonic1-SonLVL.ini file into SonLVL-RSDK.

Step 4: Create Your Mod

Using the top navigation bar, go to File > Select Mod > New Mod… to create a new mod. Fill out the form with your mod’s details, and you’re good to go!

Tip: For next time, you don’t need to manually drag your SonLVL.ini file or anything! Instead, after opening SonLVL-RSDK, you can just go to File > Recent Mods, and select both your game and your mod in one click!

Now, create your mod..
An image showing the user pressing the New Mod button in SonLVL-RSDK.

Step 5: Pick a Level & Start Editing!

Now, go to File > Change Level…, select a level, and edit to your heart’s content!

Go ahead and choose!
An image showing the user selecting a level in SonLVL-RSDK.

And You’re Ready to Go!

And that’s it, you’re all ready to start making custom levels now! Dive in, play around, and have fun! If you ever get stuck or have any questions, from level creation to modding in general, feel free to join the Retro Engine Modding Server!

The start of Green Hill Zone Act 2, opened in SonLVL-RSDK. Metallic Madness Act 2's foreground being edited.
Wing Fortress's chunks being edited. Wacky Workbench Act 1 Past's background parallax being edited.