Step 1: Open a new save of Super Meat Boy

Step 2: Enter 1-5 warpzone

Step 3: Get 3 bandages in warpzone by repeating a level

Step 4: Finish warpzone and do 1-6 through 1-11, getting all bandages

Step 5: Go back, and do stages 1-1 through 1-18, getting all bandages

Step 6: Do 1-19 warpzone, getting bandages but not repeating

Step 7: Finish warpzone, do 1-19 through 1-20 getting all bandages

Step 8: Enter forest dark world, do 1-1x through 1-4x getting all bandages

Step 9: You’re done! You have Naija and Dr. Fetus as playable characters now.

Super Meat Boy won’t crash if you unlock all the other characters - it just adds slots for them as well as having slots for Dr. Fetus, potato boy, etc.

FAQ:

Q: How do I keep my good save while doing this glitched shit?

A: Step 1: Go where Steam is located on your computer (Probably either C:\Program Files or C:\Program Files(x86) but sometimes it's on the D:\ so if you can't find it, try searching for it)

Step 2: Open Steam --> SteamApps --> common --> Super Meat Boy --> UserData

Step 3: Copy savegame.dat into some other location

Step 4: Right click on Super Meat Boy in your Steam library and go to properties

Step 5: On the 'Updates' tab, uncheck the box at the bottom about cloud synchronization

Step 6: Delete savegame.dat in /Steam/SteamApps/common/Super Meat Boy/UserData

Step 7: You’re done! :)

Step 8: If you want to put your old save back in, just delete the current savegame.dat within /Steam/SteamApps/common/Super Meat Boy/UserData and then copy savegame.dat into /Steam/SteamApps/common/Super Meat Boy/UserData. When you start the game back up, you'll have your old save :)

Q: How does this work?

A: No one really knows, but it has to do with having data in places it shouldn’t be due to bad code design. We can use it to make good things happen though :D

Q: Thanks?

A: You’re welcome!