diff --git a/dev-assets/doodads/build.sh b/dev-assets/doodads/build.sh
index 268dffd..4e20064 100755
--- a/dev-assets/doodads/build.sh
+++ b/dev-assets/doodads/build.sh
@@ -33,6 +33,9 @@ buttons() {
 	doodad convert -t "Button Type B" typeB1.png typeB2.png button-typeB.doodad
 	doodad install-script button.js button-typeB.doodad
 
+	# Tag the category for these doodads
+	for i in *.doodad; do doodad edit-doodad --tag "category=gizmos" $i; done
+
 	cp button*.doodad ../../../assets/doodads/
 	cd ..
 }
@@ -50,6 +53,9 @@ switches() {
 	doodad install-script switch.js switch-left.doodad
 	doodad install-script switch.js switch-right.doodad
 
+	# Tag the category for these doodads
+	for i in *.doodad; do doodad edit-doodad --tag "category=gizmos" $i; done
+
 	cp *.doodad ../../../assets/doodads/
 	cd ..
 }
@@ -77,6 +83,9 @@ trapdoors() {
 	doodad edit-doodad -q --tag direction=right trapdoor-right.doodad
 	doodad edit-doodad -q --tag direction=up trapdoor-up.doodad
 
+	# Tag the category for these doodads
+	for i in *.doodad; do doodad edit-doodad --tag "category=doors" $i; done
+
 	cp trapdoor-*.doodad ../../../assets/doodads/
 
 	cd ..
@@ -93,6 +102,9 @@ azulians() {
 		red-wr{1,2,3,4}.png red-wl{1,2,3,4}.png azu-red.doodad
 	doodad install-script azulian-red.js azu-red.doodad
 
+	# Tag the category for these doodads
+	for i in *.doodad; do doodad edit-doodad --tag "category=creatures" $i; done
+
 	cp azu-*.doodad ../../../assets/doodads/
 
 	cd ..
@@ -105,6 +117,9 @@ mobs() {
 		dive-left.png dive-right.png bird-red.doodad
 	doodad install-script bird.js bird-red.doodad
 
+	# Tag the category for these doodads
+	for i in *.doodad; do doodad edit-doodad --tag "category=creatures" $i; done
+
 	cp *.doodad ../../../assets/doodads/
 	cd ..
 }
@@ -117,6 +132,7 @@ objects() {
 
 	doodad convert -t "Start Flag" start-flag.png start-flag.doodad
 
+	for i in *.doodad; do doodad edit-doodad --tag "category=objects" $i; done
 	cp *.doodad ../../../assets/doodads/
 
 	cd ../crumbly-floor
@@ -125,12 +141,14 @@ objects() {
 		fall1.png fall2.png fall3.png fall4.png fallen.png \
 		crumbly-floor.doodad
 	doodad install-script crumbly-floor.js crumbly-floor.doodad
+	for i in *.doodad; do doodad edit-doodad --tag "category=objects" $i; done
 	cp *.doodad ../../../assets/doodads/
 
 	cd ../box
 
 	doodad convert -t "Box" box-1.png box-2.png box-3.png box-4.png box.doodad
 	doodad install-script box.js box.doodad
+	for i in *.doodad; do doodad edit-doodad --tag "category=objects" $i; done
 	cp *.doodad ../../../assets/doodads/
 
 	cd ..
@@ -148,6 +166,8 @@ onoff() {
 	doodad convert -t "State Block (Orange)" orange-off.png orange-on.png state-block-orange.doodad
 	doodad install-script state-block-orange.js state-block-orange.doodad
 
+	for i in *.doodad; do doodad edit-doodad --tag "category=gizmos" $i; done
+
 	cp *.doodad ../../../assets/doodads/
 
 	cd ..
@@ -170,6 +190,9 @@ warpdoor() {
 	doodad edit-doodad -q --tag color=orange warp-door-orange.doodad
 	doodad install-script warp-door.js warp-door-orange.doodad
 
+	for i in *.doodad; do doodad edit-doodad --tag "category=doors" $i; done
+	for i in warp-door-*.doodad; do doodad edit-doodad --tag "category=doors,gizmos" $i; done
+
 	cp *.doodad ../../../assets/doodads/
 
 	cd ..
diff --git a/dev-assets/doodads/doors/build.sh b/dev-assets/doodads/doors/build.sh
index 384d486..5f327d3 100755
--- a/dev-assets/doodads/doors/build.sh
+++ b/dev-assets/doodads/doors/build.sh
@@ -45,4 +45,8 @@ doodad install-script keys.js small-key.doodad
 doodad convert -t "Electric Door" electric{1,2,3,4}.png door-electric.doodad
 doodad install-script electric-door.js door-electric.doodad
 
+# Tag the category for these doodads
+for i in *.doodad; do doodad edit-doodad --tag "category=doors" $i; done
+doodad edit-doodad --tag "category=doors,gizmos" door-electric.doodad
+
 cp door-*.doodad key-*.doodad small-*.doodad ../../../assets/doodads/
diff --git a/go.mod b/go.mod
index 5b63921..90e95a3 100644
--- a/go.mod
+++ b/go.mod
@@ -5,9 +5,9 @@ go 1.16
 require (
 	git.kirsle.net/go/audio v0.0.0-20200429055451-ae3b0695ba6f
 	git.kirsle.net/go/log v0.0.0-20200902035305-70ac2848949b
-	git.kirsle.net/go/render v0.0.0-20210104010442-b4a1979a8ba1
+	git.kirsle.net/go/render v0.0.0-20210614025954-d77f5056b782
 	git.kirsle.net/go/ui v0.0.0-20200710023146-e2a561fbd04c
-	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible
 	github.com/fsnotify/fsnotify v1.4.9
 	github.com/gen2brain/dlgs v0.0.0-20210406143744-f512297a108e
 	github.com/google/uuid v1.1.2
@@ -16,9 +16,9 @@ require (
 	github.com/robertkrimen/otto v0.0.0-20200922221731-ef014fd054ac
 	github.com/tomnomnom/xtermcolor v0.0.0-20160428124646-b78803f00a7e // indirect
 	github.com/urfave/cli/v2 v2.3.0
-	github.com/veandco/go-sdl2 v0.4.7
+	github.com/veandco/go-sdl2 v0.4.8
 	github.com/vmihailenco/msgpack v3.3.3+incompatible
-	golang.org/x/image v0.0.0-20210504121937-7319ad40d33e
+	golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d
 	google.golang.org/appengine v1.6.7 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gopkg.in/sourcemap.v1 v1.0.5 // indirect
diff --git a/go.sum b/go.sum
index f52d35d..915fe9b 100644
--- a/go.sum
+++ b/go.sum
@@ -191,8 +191,8 @@ github.com/tomnomnom/xtermcolor v0.0.0-20160428124646-b78803f00a7e/go.mod h1:fSI
 github.com/urfave/cli/v2 v2.3.0 h1:qph92Y649prgesehzOrQjdWyxFOp/QVM+6imKHad91M=
 github.com/urfave/cli/v2 v2.3.0/go.mod h1:LJmUH05zAU44vOAcrfzZQKsZbVcdbOG8rtL3/XcUArI=
 github.com/veandco/go-sdl2 v0.4.1/go.mod h1:FB+kTpX9YTE+urhYiClnRzpOXbiWgaU3+5F2AB78DPg=
-github.com/veandco/go-sdl2 v0.4.7 h1:VfpCM+LfEGDbHdByglCo2bcBsevjFvzl8W0f6VLNitg=
-github.com/veandco/go-sdl2 v0.4.7/go.mod h1:OROqMhHD43nT4/i9crJukyVecjPNYYuCofep6SNiAjY=
+github.com/veandco/go-sdl2 v0.4.8 h1:A26KeX6R1CGt/BQGEov6oxYmVGMMEWDVqTvK1tXvahE=
+github.com/veandco/go-sdl2 v0.4.8/go.mod h1:OROqMhHD43nT4/i9crJukyVecjPNYYuCofep6SNiAjY=
 github.com/vmihailenco/msgpack v3.3.3+incompatible h1:wapg9xDUZDzGCNFlwc5SqI1rvcciqcxEHac4CYj89xI=
 github.com/vmihailenco/msgpack v3.3.3+incompatible/go.mod h1:fy3FlTQTDXWkZ7Bh6AcGMlsjHatGryHQYUTf1ShIgkk=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
@@ -220,8 +220,8 @@ golang.org/x/exp v0.0.0-20191030013958-a1ab85dbe136/go.mod h1:JXzH8nQsPlswgeRAPE
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/image v0.0.0-20200119044424-58c23975cae1/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20210504121937-7319ad40d33e h1:PzJMNfFQx+QO9hrC1GwZ4BoPGeNGhfeQEgcQFArEjPk=
-golang.org/x/image v0.0.0-20210504121937-7319ad40d33e/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d h1:RNPAfi2nHY7C2srAV8A49jpsYr0ADedCk1wq6fTMTvs=
+golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d/go.mod h1:023OzeP/+EPmXeapQh35lcL3II3LrY8Ic+EFFKVhULM=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -285,6 +285,7 @@ golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
diff --git a/pkg/balance/theme.go b/pkg/balance/theme.go
index d65cb23..82319d8 100644
--- a/pkg/balance/theme.go
+++ b/pkg/balance/theme.go
@@ -73,6 +73,13 @@ var (
 		PadX:         4,
 	}
 
+	// TabFrame styles.
+	TabFont = render.Text{
+		Size: 12,
+		PadX: 8,
+		PadY: 4,
+	}
+
 	// Modal backdrop color.
 	ModalBackdrop = render.RGBA(1, 1, 1, 42)
 
diff --git a/pkg/doodads/sort.go b/pkg/doodads/sort.go
new file mode 100644
index 0000000..7ba2821
--- /dev/null
+++ b/pkg/doodads/sort.go
@@ -0,0 +1,10 @@
+package doodads
+
+import "sort"
+
+// SortByName orders an array of loaded Doodads by their titles.
+func SortByName(list []*Doodad) {
+	sort.SliceStable(list, func(i, j int) bool {
+		return list[i].Title < list[j].Title
+	})
+}
diff --git a/pkg/windows/doodad_dropper.go b/pkg/windows/doodad_dropper.go
index 26553e4..f6d7e47 100644
--- a/pkg/windows/doodad_dropper.go
+++ b/pkg/windows/doodad_dropper.go
@@ -3,6 +3,7 @@ package windows
 import (
 	"fmt"
 	"math"
+	"strings"
 
 	"git.kirsle.net/apps/doodle/pkg/balance"
 	"git.kirsle.net/apps/doodle/pkg/doodads"
@@ -40,33 +41,9 @@ func NewDoodadDropper(config DoodadDropper) *ui.Window {
 		// size of the doodad window
 		width  = buttonSize * columns
 		height = (buttonSize * rows) + 64 // account for button borders :(
-
-		// pagination values
-		page           = 1
-		pages          int
-		perPage        = 20
-		maxPageButtons = 10
 	)
 
-	window := ui.NewWindow(title)
-	window.SetButtons(ui.CloseButton)
-	window.Configure(ui.Config{
-		Width:      width,
-		Height:     height,
-		Background: render.Grey,
-	})
-
-	frame := ui.NewFrame("Window Body Frame")
-	window.Pack(frame, ui.Pack{
-		Side:   ui.N,
-		Fill:   true,
-		Expand: true,
-	})
-
-	/*******
-	 * Display the Doodads in rows of buttons
-	 *******/
-
+	// Get all the doodads.
 	doodadsAvailable, err := doodads.ListDoodads()
 	if err != nil {
 		log.Error("NewDoodadDropper: doodads.ListDoodads: %s", err)
@@ -90,6 +67,76 @@ func NewDoodadDropper(config DoodadDropper) *ui.Window {
 		items = append(items, doodad)
 	}
 
+	window := ui.NewWindow(title)
+	window.SetButtons(ui.CloseButton)
+	window.Configure(ui.Config{
+		Width:      width,
+		Height:     height + 30,
+		Background: render.Grey,
+	})
+
+	tabFrame := ui.NewTabFrame("Category Tabs")
+	window.Pack(tabFrame, ui.Pack{
+		Side:   ui.N,
+		Fill:   true,
+		Expand: true,
+	})
+
+	// The Category Tabs.
+	categories := []struct {
+		ID   string
+		Name string
+	}{
+		{"objects", "Objects"},
+		{"doors", "Doors"},
+		{"gizmos", "Gizmos"},
+		{"creatures", "Creatures"},
+		{"", "All"},
+	}
+	for _, category := range categories {
+		tab1 := tabFrame.AddTab(category.Name, ui.NewLabel(ui.Label{
+			Text: category.Name,
+			Font: balance.TabFont,
+		}))
+		makeDoodadTab(config, tab1, render.NewRect(width-4, height-60), category.ID, items)
+	}
+
+	tabFrame.Supervise(config.Supervisor)
+
+	window.Hide()
+	return window
+}
+
+// Function to generate the TabFrame frame of the Doodads window.
+func makeDoodadTab(config DoodadDropper, frame *ui.Frame, size render.Rect, category string, available []*doodads.Doodad) {
+	var (
+		buttonSize = balance.DoodadButtonSize
+		columns    = balance.DoodadDropperCols
+		rows       = balance.DoodadDropperRows
+
+		// pagination values
+		page           = 1
+		pages          int
+		perPage        = 20
+		maxPageButtons = 10
+	)
+	frame.Resize(size)
+
+	// Trim the available doodads to those fitting the category.
+	var items = []*doodads.Doodad{}
+	for _, candidate := range available {
+		if value, ok := candidate.Tags["category"]; ok {
+			if category != "" && !strings.Contains(value, category) {
+				continue
+			}
+		} else if category != "" {
+			continue
+		}
+		items = append(items, candidate)
+	}
+
+	doodads.SortByName(items)
+
 	// Compute the number of pages for the pager widget.
 	pages = int(
 		math.Ceil(
@@ -176,7 +223,7 @@ func NewDoodadDropper(config DoodadDropper) *ui.Window {
 
 		bottomFrame := ui.NewFrame("Button Frame")
 		frame.Pack(bottomFrame, ui.Pack{
-			Side:  ui.S,
+			Side:  ui.N,
 			FillX: true,
 		})
 
@@ -242,7 +289,4 @@ func NewDoodadDropper(config DoodadDropper) *ui.Window {
 			})
 		}
 	}
-
-	window.Hide()
-	return window
 }
diff --git a/pkg/windows/settings.go b/pkg/windows/settings.go
index 45558cb..7a7d076 100644
--- a/pkg/windows/settings.go
+++ b/pkg/windows/settings.go
@@ -50,17 +50,9 @@ func MakeSettingsWindow(windowWidth, windowHeight int, cfg Settings) *ui.Window
 // NewSettingsWindow initializes the window.
 func NewSettingsWindow(cfg Settings) *ui.Window {
 	var (
-		Width     = 400
-		Height    = 400
-		ActiveTab = "index"
-
-		// The tab frames
-		TabOptions  *ui.Frame // index
-		TabControls *ui.Frame // controls
+		Width  = 400
+		Height = 400
 	)
-	if cfg.ActiveTab != "" {
-		ActiveTab = cfg.ActiveTab
-	}
 
 	window := ui.NewWindow("Settings")
 	window.SetButtons(ui.CloseButton)
@@ -72,63 +64,22 @@ func NewSettingsWindow(cfg Settings) *ui.Window {
 
 	///////////
 	// Tab Bar
-	tabFrame := ui.NewFrame("Tab Bar")
+	tabFrame := ui.NewTabFrame("Tab Frame")
 	tabFrame.SetBackground(render.DarkGrey)
 	window.Pack(tabFrame, ui.Pack{
 		Side:  ui.N,
 		FillX: true,
 	})
-	for _, tab := range []struct {
-		label string
-		value string
-	}{
-		{"Options", "index"},
-		{"Controls", "controls"},
-	} {
-		radio := ui.NewRadioButton(tab.label, &ActiveTab, tab.value, ui.NewLabel(ui.Label{
-			Text: tab.label,
-			Font: balance.UIFont,
-		}))
-		radio.SetStyle(&balance.ButtonBabyBlue)
-		radio.Handle(ui.Click, func(ed ui.EventData) error {
-			switch ActiveTab {
-			case "index":
-				TabOptions.Show()
-				TabControls.Hide()
-			case "controls":
-				TabOptions.Hide()
-				TabControls.Show()
-			}
-			return nil
-		})
-		cfg.Supervisor.Add(radio)
-		tabFrame.Pack(radio, ui.Pack{
-			Side:   ui.W,
-			Expand: true,
-		})
-	}
 
 	///////////
 	// Options (index) Tab
-	TabOptions = cfg.makeOptionsTab(Width, Height)
-	if ActiveTab != "index" {
-		TabOptions.Hide()
-	}
-	window.Pack(TabOptions, ui.Pack{
-		Side:  ui.N,
-		FillX: true,
-	})
+	cfg.makeOptionsTab(tabFrame, Width, Height)
 
 	///////////
 	// Controls Tab
-	TabControls = cfg.makeControlsTab(Width, Height)
-	if ActiveTab != "controls" {
-		TabControls.Hide()
-	}
-	window.Pack(TabControls, ui.Pack{
-		Side:  ui.N,
-		FillX: true,
-	})
+	cfg.makeControlsTab(tabFrame, Width, Height)
+
+	tabFrame.Supervise(cfg.Supervisor)
 
 	return window
 }
@@ -143,8 +94,12 @@ func saveGameSettings() {
 }
 
 // Settings Window "Options" Tab
-func (c Settings) makeOptionsTab(Width, Height int) *ui.Frame {
-	tab := ui.NewFrame("Options Tab")
+func (c Settings) makeOptionsTab(tabFrame *ui.TabFrame, Width, Height int) *ui.Frame {
+	tab := tabFrame.AddTab("Options", ui.NewLabel(ui.Label{
+		Text: "Options",
+		Font: balance.TabFont,
+	}))
+	tab.Resize(render.NewRect(Width-4, Height-tab.Size().H-46))
 
 	// Common click handler for all settings,
 	// so we can write the updated info to disk.
@@ -307,7 +262,13 @@ func (c Settings) makeOptionsTab(Width, Height int) *ui.Frame {
 }
 
 // Settings Window "Controls" Tab
-func (c Settings) makeControlsTab(Width, Height int) *ui.Frame {
+func (c Settings) makeControlsTab(tabFrame *ui.TabFrame, Width, Height int) *ui.Frame {
+	frame := tabFrame.AddTab("Controls", ui.NewLabel(ui.Label{
+		Text: "Controls",
+		Font: balance.TabFont,
+	}))
+	frame.Resize(render.NewRect(Width-4, Height-frame.Size().H-46))
+
 	var (
 		halfWidth        = (Width - 4) / 2 // the 4 is for window borders, TODO
 		shortcutTabWidth = float64(halfWidth) * 0.5
@@ -317,7 +278,6 @@ func (c Settings) makeControlsTab(Width, Height int) *ui.Frame {
 		shortcutTabSize = render.NewRect(int(shortcutTabWidth), rowHeight)
 		infoTabSize     = render.NewRect(int(infoTabWidth), rowHeight)
 	)
-	frame := ui.NewFrame("Controls Tab")
 
 	controls := []struct {
 		Header   string