diff --git a/Install.ps1 b/Install.ps1
new file mode 100644
index 0000000..6017891
--- /dev/null
+++ b/Install.ps1
@@ -0,0 +1,115 @@
+[CmdletBinding()]
+param(
+    [string]$GameDir
+)
+
+$ErrorActionPreference = 'Stop'
+
+function Write-Step {
+    param([string]$Text)
+    Write-Host ''
+    Write-Host $Text -ForegroundColor Cyan
+}
+
+function Find-GameDir {
+    $steam = (Get-ItemProperty 'HKCU:\Software\Valve\Steam' -ErrorAction SilentlyContinue).SteamPath
+    if (-not $steam) { return $null }
+    $libs = @($steam)
+    $vdf = Join-Path $steam 'steamapps\libraryfolders.vdf'
+    if (Test-Path $vdf) {
+        Select-String -Path $vdf -Pattern '"path"\s+"(.+?)"' -AllMatches |
+            ForEach-Object { $_.Matches } |
+            ForEach-Object { $libs += $_.Groups[1].Value.Replace('\\','\') }
+    }
+    foreach ($lib in $libs) {
+        $candidate = Join-Path $lib 'steamapps\common\Sons Of The Forest'
+        if (Test-Path (Join-Path $candidate 'SonsOfTheForest.exe')) { return $candidate }
+    }
+    return $null
+}
+
+function Get-ReleaseZip {
+    param([string]$Repo, [string]$Pattern, [string]$OutFile)
+    $release = Invoke-RestMethod "https://api.github.com/repos/$Repo/releases/latest" -Headers @{ 'User-Agent' = 'ps' }
+    $asset = $release.assets | Where-Object { $_.name -match $Pattern } | Select-Object -First 1
+    if (-not $asset) { throw "Could not find a download matching $Pattern in the latest $Repo release" }
+    Write-Host "  version $($release.tag_name)"
+    Invoke-WebRequest -Uri $asset.browser_download_url -OutFile $OutFile -UseBasicParsing
+    return $asset.name
+}
+
+Write-Host ''
+Write-Host '====================================' -ForegroundColor Green
+Write-Host ' Character Select installer' -ForegroundColor Green
+Write-Host '====================================' -ForegroundColor Green
+
+Write-Step 'Looking for Sons of the Forest'
+if (-not $GameDir) { $GameDir = Find-GameDir }
+if (-not $GameDir -or -not (Test-Path (Join-Path $GameDir 'SonsOfTheForest.exe'))) {
+    Write-Host '  Could not find the game automatically.' -ForegroundColor Yellow
+    Write-Host '  Find the folder that contains SonsOfTheForest.exe and paste the path below.'
+    $GameDir = (Read-Host '  Game folder').Trim('"')
+    if (-not (Test-Path (Join-Path $GameDir 'SonsOfTheForest.exe'))) {
+        throw "SonsOfTheForest.exe was not found in $GameDir"
+    }
+}
+Write-Host "  found: $GameDir" -ForegroundColor Green
+
+$needsFirstLaunch = $false
+
+Write-Step 'Checking for RedLoader'
+if (Test-Path (Join-Path $GameDir '_RedLoader\net6\SonsSdk.dll')) {
+    Write-Host '  already installed' -ForegroundColor Green
+}
+else {
+    Write-Host '  not installed, downloading it now'
+    $rlZip = Join-Path $env:TEMP 'RedLoader.zip'
+    Get-ReleaseZip -Repo 'ToniMacaroni/RedLoader' -Pattern '^RedLoader.*\.zip$' -OutFile $rlZip | Out-Null
+
+    $rlStage = Join-Path $env:TEMP 'redloader-stage'
+    if (Test-Path $rlStage) { Remove-Item $rlStage -Recurse -Force }
+    Expand-Archive -Path $rlZip -DestinationPath $rlStage -Force
+    Copy-Item -Path (Join-Path $rlStage '*') -Destination $GameDir -Recurse -Force
+    Remove-Item $rlZip -Force -ErrorAction SilentlyContinue
+    Remove-Item $rlStage -Recurse -Force -ErrorAction SilentlyContinue
+    Write-Host '  installed' -ForegroundColor Green
+    $needsFirstLaunch = $true
+}
+
+Write-Step 'Downloading Character Select'
+$modZip = Join-Path $env:TEMP 'CharacterSelect.zip'
+Get-ReleaseZip -Repo 'JustinOros/sotf-character-select' -Pattern '^CharacterSelect\.zip$' -OutFile $modZip | Out-Null
+
+Write-Step 'Installing Character Select'
+$modsDir = Join-Path $GameDir 'Mods'
+New-Item -ItemType Directory -Force -Path $modsDir | Out-Null
+Remove-Item (Join-Path $modsDir 'CharacterSelect.dll') -Force -ErrorAction SilentlyContinue
+Remove-Item (Join-Path $modsDir 'CharacterSelect') -Recurse -Force -ErrorAction SilentlyContinue
+Expand-Archive -Path $modZip -DestinationPath $modsDir -Force
+Remove-Item $modZip -Force -ErrorAction SilentlyContinue
+
+if (-not (Test-Path (Join-Path $modsDir 'CharacterSelect.dll'))) {
+    throw 'Something went wrong, CharacterSelect.dll is not in the Mods folder'
+}
+if (-not (Test-Path (Join-Path $modsDir 'CharacterSelect\manifest.json'))) {
+    throw 'Something went wrong, manifest.json is not in the Mods\CharacterSelect folder'
+}
+Write-Host '  installed' -ForegroundColor Green
+
+Write-Host ''
+Write-Host '====================================' -ForegroundColor Green
+Write-Host ' Done' -ForegroundColor Green
+Write-Host '====================================' -ForegroundColor Green
+Write-Host ''
+
+if ($needsFirstLaunch) {
+    Write-Host 'RedLoader was installed for the first time, so the next time you start'
+    Write-Host 'the game it will take a few extra minutes to get ready. That is normal.'
+    Write-Host ''
+}
+
+Write-Host 'Start Sons of the Forest, then:'
+Write-Host '  1. Check that MODS appears on the main menu and lists CharacterSelect'
+Write-Host '  2. Load into a game'
+Write-Host '  3. Press F9 to change your appearance'
+Write-Host ''