diff --git a/90 Tower/csharp/Tower.sln b/90_Tower/csharp/Tower.sln
similarity index 100%
rename from 90 Tower/csharp/Tower.sln
rename to 90_Tower/csharp/Tower.sln
diff --git a/90 Tower/csharp/Tower/Game.cs b/90_Tower/csharp/Tower/Game.cs
similarity index 100%
rename from 90 Tower/csharp/Tower/Game.cs
rename to 90_Tower/csharp/Tower/Game.cs
diff --git a/90 Tower/csharp/Tower/Models/Needle.cs b/90_Tower/csharp/Tower/Models/Needle.cs
similarity index 100%
rename from 90 Tower/csharp/Tower/Models/Needle.cs
rename to 90_Tower/csharp/Tower/Models/Needle.cs
diff --git a/90 Tower/csharp/Tower/Models/Towers.cs b/90_Tower/csharp/Tower/Models/Towers.cs
similarity index 100%
rename from 90 Tower/csharp/Tower/Models/Towers.cs
rename to 90_Tower/csharp/Tower/Models/Towers.cs
diff --git a/90 Tower/csharp/Tower/Program.cs b/90_Tower/csharp/Tower/Program.cs
similarity index 100%
rename from 90 Tower/csharp/Tower/Program.cs
rename to 90_Tower/csharp/Tower/Program.cs
diff --git a/90 Tower/csharp/Tower/Resources/Congratulations.txt b/90_Tower/csharp/Tower/Resources/Congratulations.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/Congratulations.txt
rename to 90_Tower/csharp/Tower/Resources/Congratulations.txt
diff --git a/90 Tower/csharp/Tower/Resources/DiskCountPrompt.txt b/90_Tower/csharp/Tower/Resources/DiskCountPrompt.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/DiskCountPrompt.txt
rename to 90_Tower/csharp/Tower/Resources/DiskCountPrompt.txt
diff --git a/90 Tower/csharp/Tower/Resources/DiskCountQuit.txt b/90_Tower/csharp/Tower/Resources/DiskCountQuit.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/DiskCountQuit.txt
rename to 90_Tower/csharp/Tower/Resources/DiskCountQuit.txt
diff --git a/90 Tower/csharp/Tower/Resources/DiskCountRetry.txt b/90_Tower/csharp/Tower/Resources/DiskCountRetry.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/DiskCountRetry.txt
rename to 90_Tower/csharp/Tower/Resources/DiskCountRetry.txt
diff --git a/90 Tower/csharp/Tower/Resources/DiskNotInPlay.txt b/90_Tower/csharp/Tower/Resources/DiskNotInPlay.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/DiskNotInPlay.txt
rename to 90_Tower/csharp/Tower/Resources/DiskNotInPlay.txt
diff --git a/90 Tower/csharp/Tower/Resources/DiskPrompt.txt b/90_Tower/csharp/Tower/Resources/DiskPrompt.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/DiskPrompt.txt
rename to 90_Tower/csharp/Tower/Resources/DiskPrompt.txt
diff --git a/90 Tower/csharp/Tower/Resources/DiskQuit.txt b/90_Tower/csharp/Tower/Resources/DiskQuit.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/DiskQuit.txt
rename to 90_Tower/csharp/Tower/Resources/DiskQuit.txt
diff --git a/90 Tower/csharp/Tower/Resources/DiskRetry.txt b/90_Tower/csharp/Tower/Resources/DiskRetry.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/DiskRetry.txt
rename to 90_Tower/csharp/Tower/Resources/DiskRetry.txt
diff --git a/90 Tower/csharp/Tower/Resources/DiskUnavailable.txt b/90_Tower/csharp/Tower/Resources/DiskUnavailable.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/DiskUnavailable.txt
rename to 90_Tower/csharp/Tower/Resources/DiskUnavailable.txt
diff --git a/90 Tower/csharp/Tower/Resources/IllegalMove.txt b/90_Tower/csharp/Tower/Resources/IllegalMove.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/IllegalMove.txt
rename to 90_Tower/csharp/Tower/Resources/IllegalMove.txt
diff --git a/90 Tower/csharp/Tower/Resources/Instructions.txt b/90_Tower/csharp/Tower/Resources/Instructions.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/Instructions.txt
rename to 90_Tower/csharp/Tower/Resources/Instructions.txt
diff --git a/90 Tower/csharp/Tower/Resources/Intro.txt b/90_Tower/csharp/Tower/Resources/Intro.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/Intro.txt
rename to 90_Tower/csharp/Tower/Resources/Intro.txt
diff --git a/90 Tower/csharp/Tower/Resources/NeedlePrompt.txt b/90_Tower/csharp/Tower/Resources/NeedlePrompt.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/NeedlePrompt.txt
rename to 90_Tower/csharp/Tower/Resources/NeedlePrompt.txt
diff --git a/90 Tower/csharp/Tower/Resources/NeedleQuit.txt b/90_Tower/csharp/Tower/Resources/NeedleQuit.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/NeedleQuit.txt
rename to 90_Tower/csharp/Tower/Resources/NeedleQuit.txt
diff --git a/90 Tower/csharp/Tower/Resources/NeedleRetry.txt b/90_Tower/csharp/Tower/Resources/NeedleRetry.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/NeedleRetry.txt
rename to 90_Tower/csharp/Tower/Resources/NeedleRetry.txt
diff --git a/90 Tower/csharp/Tower/Resources/PlayAgainPrompt.txt b/90_Tower/csharp/Tower/Resources/PlayAgainPrompt.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/PlayAgainPrompt.txt
rename to 90_Tower/csharp/Tower/Resources/PlayAgainPrompt.txt
diff --git a/90 Tower/csharp/Tower/Resources/Strings.cs b/90_Tower/csharp/Tower/Resources/Strings.cs
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/Strings.cs
rename to 90_Tower/csharp/Tower/Resources/Strings.cs
diff --git a/90 Tower/csharp/Tower/Resources/TaskFinished.txt b/90_Tower/csharp/Tower/Resources/TaskFinished.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/TaskFinished.txt
rename to 90_Tower/csharp/Tower/Resources/TaskFinished.txt
diff --git a/90 Tower/csharp/Tower/Resources/Thanks.txt b/90_Tower/csharp/Tower/Resources/Thanks.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/Thanks.txt
rename to 90_Tower/csharp/Tower/Resources/Thanks.txt
diff --git a/90 Tower/csharp/Tower/Resources/Title.txt b/90_Tower/csharp/Tower/Resources/Title.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/Title.txt
rename to 90_Tower/csharp/Tower/Resources/Title.txt
diff --git a/90 Tower/csharp/Tower/Resources/TooManyMoves.txt b/90_Tower/csharp/Tower/Resources/TooManyMoves.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/TooManyMoves.txt
rename to 90_Tower/csharp/Tower/Resources/TooManyMoves.txt
diff --git a/90 Tower/csharp/Tower/Resources/YesNoPrompt.txt b/90_Tower/csharp/Tower/Resources/YesNoPrompt.txt
similarity index 100%
rename from 90 Tower/csharp/Tower/Resources/YesNoPrompt.txt
rename to 90_Tower/csharp/Tower/Resources/YesNoPrompt.txt
diff --git a/90 Tower/csharp/Tower/Tower.csproj b/90_Tower/csharp/Tower/Tower.csproj
similarity index 100%
rename from 90 Tower/csharp/Tower/Tower.csproj
rename to 90_Tower/csharp/Tower/Tower.csproj
diff --git a/90 Tower/csharp/Tower/UI/Input.cs b/90_Tower/csharp/Tower/UI/Input.cs
similarity index 100%
rename from 90 Tower/csharp/Tower/UI/Input.cs
rename to 90_Tower/csharp/Tower/UI/Input.cs
diff --git a/90 Tower/csharp/Tower/UI/Prompt.cs b/90_Tower/csharp/Tower/UI/Prompt.cs
similarity index 100%
rename from 90 Tower/csharp/Tower/UI/Prompt.cs
rename to 90_Tower/csharp/Tower/UI/Prompt.cs
diff --git a/90 Tower/csharp/Tower/UI/TowerDisplay.cs b/90_Tower/csharp/Tower/UI/TowerDisplay.cs
similarity index 100%
rename from 90 Tower/csharp/Tower/UI/TowerDisplay.cs
rename to 90_Tower/csharp/Tower/UI/TowerDisplay.cs