diff --git a/boxline2.js b/boxline2.js
index 16bd44e..2fdec05 100644
--- a/boxline2.js
+++ b/boxline2.js
@@ -32,10 +32,15 @@ function edgeName(link) {
         return `link-${link.index}`
 }
 
-export function renderBoxGraph({nodes, links}, ignore, callback) {
+export function renderBoxGraph({nodes, links}, direction, ignore, callback) {
     let [itemColors, recipeColors] = getColorMaps(nodes, links)
+    if (direction === "down") {
+        direction = "TB"
+    } else {
+        direction = "LR"
+    }
     let g = new dagre.graphlib.Graph({multigraph: true})
-    g.setGraph({rankdir: "TB"})
+    g.setGraph({rankdir: direction})
     g.setDefaultEdgeLabel(() => {})
 
     let testSVG = d3.select("body").append("svg").classed("test", true)
@@ -181,7 +186,7 @@ export function renderBoxGraph({nodes, links}, ignore, callback) {
         .data(nodes)
         .join("g")
             .classed("node", true)
-    renderNode(rects, boxlineNodeMargin, recipeColors, ignore)
+    renderNode(rects, boxlineNodeMargin, "left", recipeColors, ignore)
 
     svg.append("g")
         .classed("overlay", true)
diff --git a/calc.html b/calc.html
index dd6cd19..149cb4e 100644
--- a/calc.html
+++ b/calc.html
@@ -26,7 +26,7 @@
         var handlers = {}
     </script>
     <script type="module">
-        import { plusHandler, clickTab, clickVisualize, changeTitle, changeRatePrecision, changeCountPrecision, changeFormat, changeMprod, changeVisType, changeVisRender, toggleDebug } from "./events.js"
+        import { plusHandler, clickTab, clickVisualize, changeTitle, changeRatePrecision, changeCountPrecision, changeFormat, changeMprod, changeVisType, changeVisRender, changeVisDir, toggleDebug } from "./events.js"
         import { init } from "./init.js"
         handlers.plusHandler = plusHandler
         handlers.clickTab = clickTab
@@ -38,6 +38,7 @@
         handlers.changeMprod = changeMprod
         handlers.changeVisType = changeVisType
         handlers.changeVisRender = changeVisRender
+        handlers.changeVisDir = changeVisDir
         handlers.toggleDebug = toggleDebug
         handlers.init = init
     </script>
@@ -115,6 +116,16 @@
                 <label for="fix_render">Fixed</label>
             </form>
         </div>
+        <div class="graph_setting">
+            Graph direction:<br>
+            <form id="graph_direction">
+                <input id="right_direction" type="radio" name="direction" value="right" autocomplete="off" onchange="handlers.changeVisDir(event)">
+                <label for="right_direction">Left to right</label>
+
+                <input id="down_direction" type="radio" name="direction" value="down" autocomplete="off" onchange="handlers.changeVisDir(event)">
+                <label for="down_direction">Top to bottom</label>
+            </form>
+        </div>
         <div id="graph_container">
         <svg id="graph"><g /></svg>
         </div>
diff --git a/events.js b/events.js
index 6079b18..54f7adc 100644
--- a/events.js
+++ b/events.js
@@ -93,6 +93,8 @@ export function setVisualizerType(vt) {
 
 export function changeVisType(event) {
     visualizerType = event.target.value
+    visualizerDirection = getDefaultVisDirection()
+    d3.select(`#${visualizerDirection}_direction`).property("checked", true)
     spec.display()
 }
 
@@ -109,6 +111,29 @@ export function changeVisRender(event) {
     spec.display()
 }
 
+export let visualizerDirection
+
+export function getDefaultVisDirection() {
+    if (visualizerType === "sankey") {
+        return "right"
+    } else {
+        return "down"
+    }
+}
+
+export function isDefaultVisDirection() {
+    return visualizerDirection === getDefaultVisDirection()
+}
+
+export function setVisualizerDirection(vd) {
+    visualizerDirection = vd
+}
+
+export function changeVisDir(event) {
+    visualizerDirection = event.target.value
+    spec.display()
+}
+
 // Number of SVG coordinate points per zoom level.
 const ZOOM_SCALE = 100
 // Number of distinct zoom "steps."
diff --git a/fragment.js b/fragment.js
index b7873b7..42e97a1 100644
--- a/fragment.js
+++ b/fragment.js
@@ -12,7 +12,7 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.*/
 import { DEFAULT_RATE, DEFAULT_RATE_PRECISION, DEFAULT_COUNT_PRECISION, DEFAULT_FORMAT } from "./align.js"
-import { DEFAULT_TAB, currentTab, DEFAULT_VISUALIZER, visualizerType, DEFAULT_RENDER, visualizerRender } from "./events.js"
+import { DEFAULT_TAB, currentTab, DEFAULT_VISUALIZER, visualizerType, DEFAULT_RENDER, visualizerRender, isDefaultVisDirection, visualizerDirection } from "./events.js"
 import { spec, DEFAULT_BELT, DEFAULT_FUEL } from "./factory.js"
 import { Rational } from "./rational.js"
 import { currentMod, DEFAULT_TITLE, DEFAULT_COLOR_SCHEME, colorScheme } from "./settings.js"
@@ -102,6 +102,9 @@ export function formatSettings(excludeTitle, overrideTab, targets) {
     if (visualizerRender !== DEFAULT_RENDER) {
         settings += "vr=" + visualizerRender + "&"
     }
+    if (!isDefaultVisDirection()) {
+        settings += "vd=" + visualizerDirection + "&"
+    }
 
     settings += "items="
     let targetStrings = []
diff --git a/graph.js b/graph.js
index 6b4a73e..5f75f6b 100644
--- a/graph.js
+++ b/graph.js
@@ -103,7 +103,14 @@ export function imageViewBox(obj) {
     return `${x1} ${y1} ${PX_WIDTH-1} ${PX_HEIGHT-1}`
 }
 
-export function renderNode(rects, nodeMargin, recipeColors, ignore) {
+export function renderNode(rects, nodeMargin, justification, recipeColors, ignore) {
+    rects.each(d => {
+        if (justification === "left") {
+            d.labelX = d.x0
+        } else {
+            d.labelX = (d.x0 + d.x1)/2 - d.width/2
+        }
+    })
     // main rect
     rects.append("rect")
         .attr("x", d => d.x0)
@@ -125,7 +132,7 @@ export function renderNode(rects, nodeMargin, recipeColors, ignore) {
     // recipe icon
     labeledNode.append("svg")
         .attr("viewBox", d => imageViewBox(d.recipe))
-        .attr("x", d => d.x0 + nodeMargin + 0.5)
+        .attr("x", d => d.labelX + nodeMargin + 0.5)
         .attr("y", d => (d.y0 + d.y1) / 2 - iconSize/2 + 0.5)
         .attr("width", iconSize)
         .attr("height", iconSize)
@@ -136,7 +143,7 @@ export function renderNode(rects, nodeMargin, recipeColors, ignore) {
             .attr("height", sheetHeight)
     // node text (building count, or plain rate if no building)
     labeledNode.append("text")
-        .attr("x", d => d.x0 + nodeMargin + iconSize + (d.building === null ? 0 : colonWidth + iconSize) /*+ 5*/)
+        .attr("x", d => d.labelX + nodeMargin + iconSize + (d.building === null ? 0 : colonWidth + iconSize) /*+ 5*/)
         .attr("y", d => (d.y0 + d.y1) / 2)
         .attr("dy", "0.35em")
         .text(d => d.text())
@@ -144,18 +151,18 @@ export function renderNode(rects, nodeMargin, recipeColors, ignore) {
     // colon
     buildingNode.append("circle")
         .classed("colon", true)
-        .attr("cx", d => d.x0 + nodeMargin + iconSize + colonWidth/2)
+        .attr("cx", d => d.labelX + nodeMargin + iconSize + colonWidth/2)
         .attr("cy", d => (d.y0 + d.y1) / 2 - 4)
         .attr("r", 1)
     buildingNode.append("circle")
         .classed("colon", true)
-        .attr("cx", d => d.x0 + nodeMargin + iconSize + colonWidth/2)
+        .attr("cx", d => d.labelX + nodeMargin + iconSize + colonWidth/2)
         .attr("cy", d => (d.y0 + d.y1) / 2 + 4)
         .attr("r", 1)
     // building icon
     buildingNode.append("svg")
         .attr("viewBox", d => imageViewBox(d.building))
-        .attr("x", d => d.x0 + iconSize + colonWidth + nodeMargin + 0.5)
+        .attr("x", d => d.labelX + iconSize + colonWidth + nodeMargin + 0.5)
         .attr("y", d => (d.y0 + d.y1) / 2 - iconSize/2 + 0.5)
         .attr("width", iconSize)
         .attr("height", iconSize)
diff --git a/sankey.js b/sankey.js
index 62ab88d..a918ffa 100644
--- a/sankey.js
+++ b/sankey.js
@@ -95,7 +95,7 @@ function linkPath(d) {
     return makeCurve(1, 0, x0, y0, x1, y1, d.width)
 }
 
-export function renderSankey(data, ignore) {
+export function renderSankey(data, direction, ignore) {
     let maxNodeWidth = 0
     let testSVG = d3.select("body").append("svg")
         .classed("sankey test", true)
@@ -110,9 +110,17 @@ export function renderSankey(data, ignore) {
     text.remove()
     testSVG.remove()
 
+    let nw, np
+    if (direction === "down") {
+        nw = nodePadding
+        np = maxNodeWidth
+    } else if (direction === "right") {
+        nw = maxNodeWidth
+        np = nodePadding
+    }
     let sankey = d3sankey.sankey()
-        .nodeWidth(maxNodeWidth)
-        .nodePadding(nodePadding)
+        .nodeWidth(nw)
+        .nodePadding(np)
         .nodeAlign(d3sankey.sankeyRight)
         .maxNodeHeight(maxNodeHeight)
         .linkLength(columnWidth)
@@ -121,6 +129,9 @@ export function renderSankey(data, ignore) {
 
     for (let link of links) {
         link.curve = linkPath(link)
+        if (direction === "down") {
+            link.curve = link.curve.transpose()
+        }
         let belts = []
         if (link.beltCount !== null) {
             let dy = link.width / link.beltCount.toFloat()
@@ -136,6 +147,13 @@ export function renderSankey(data, ignore) {
         link.belts = belts
     }
 
+    if (direction === "down") {
+        for (let node of nodes) {
+            [node.x0, node.y0] = [node.y0, node.x0];
+            [node.x1, node.y1] = [node.y1, node.x1];
+        }
+    }
+
     let svg = d3.select("svg#graph")
         .classed("sankey", true)
     svg.selectAll("g").remove()
@@ -148,7 +166,11 @@ export function renderSankey(data, ignore) {
         .join("g")
             .classed("node", true)
 
-    renderNode(rects, sankeyNodeMargin, recipeColors, ignore)
+    let nodeJust = "left"
+    if (direction === "down") {
+        nodeJust = "center"
+    }
+    renderNode(rects, sankeyNodeMargin, nodeJust, recipeColors, ignore)
 
     // Link paths
     let link = svg.append("g")
@@ -190,23 +212,38 @@ export function renderSankey(data, ignore) {
             .attr("stroke-width", 1)
     link.append("title")
         .text(d => `${d.source.name} \u2192 ${d.target.name}\n${spec.format.rate(d.rate)}`)
-    link.filter(d => d.extra)
+    let linkIcon = link.filter(d => d.extra)
         .append("svg")
             .attr("viewBox", d => imageViewBox(d.item))
             .attr("x", d => d.source.x1 + 2.25)
             .attr("y", d => d.y0 - iconSize/4 + 0.25)
             .attr("width", iconSize/2)
             .attr("height", iconSize/2)
-            .append("image")
-                .attr("xlink:href", "images/sprite-sheet-" + sheetHash + ".png")
-                .attr("width", sheetWidth)
-                .attr("height", sheetHeight)
-    link.append("text")
+    linkIcon.append("image")
+        .attr("xlink:href", "images/sprite-sheet-" + sheetHash + ".png")
+        .attr("width", sheetWidth)
+        .attr("height", sheetHeight)
+    if (direction === "down") {
+        linkIcon
+            .attr("x", d => d.y0 - iconSize/4 + 0.25)
+            .attr("y", d => d.source.y1 + 2.25)
+    }
+    let linkLabel = link.append("text")
         .attr("x", d => d.source.x1 + 2 + (d.extra ? iconSize/2 : 0))
         .attr("y", d => d.y0)
         .attr("dy", "0.35em")
         .attr("text-anchor", "start")
         .text(d => (d.extra ? "\u00d7 " : "") + spec.format.rate(d.rate) + "/" + spec.format.rateName)
+    if (direction === "down") {
+        linkLabel
+            .attr("x", null)
+            .attr("y", null)
+            .attr("transform", d => {
+                let x = d.y0
+                let y = d.source.y1 + 2 + (d.extra ? 16 : 0)
+                return `translate(${x},${y}) rotate(90)`
+            })
+    }
 
     // Overlay transparent rect on top of each node, for click events.
     let rectElements = svg.selectAll("g.node rect").nodes()
diff --git a/settings.js b/settings.js
index 52fe422..82c586c 100644
--- a/settings.js
+++ b/settings.js
@@ -13,7 +13,7 @@ See the License for the specific language governing permissions and
 limitations under the License.*/
 import { DEFAULT_RATE, DEFAULT_RATE_PRECISION, DEFAULT_COUNT_PRECISION, DEFAULT_FORMAT, longRateNames } from "./align.js"
 import { colorSchemes } from "./color.js"
-import { DEFAULT_TAB, clickTab, DEFAULT_VISUALIZER, visualizerType, setVisualizerType, DEFAULT_RENDER, visualizerRender, setVisualizerRender } from "./events.js"
+import { DEFAULT_TAB, clickTab, DEFAULT_VISUALIZER, visualizerType, setVisualizerType, DEFAULT_RENDER, visualizerRender, setVisualizerRender, visualizerDirection, getDefaultVisDirection, setVisualizerDirection } from "./events.js"
 import { spec, DEFAULT_BELT, DEFAULT_FUEL, buildingSort } from "./factory.js"
 import { getRecipeGroups } from "./groups.js"
 import { changeMod } from "./init.js"
@@ -40,7 +40,7 @@ export let MODIFICATIONS = new Map([
     //["space-age", new Modification("Space Age 2.0.6", "space-age-2.0.6.json", false)],
 ])
 
-let DEFAULT_MODIFICATION = "2-0-6"
+let DEFAULT_MODIFICATION = "2-0-7"
 
 // Ideally we'd write this as a generalized function, but for now we can hard-
 // code these version upgrades.
@@ -525,6 +525,12 @@ function renderVisualizer(settings) {
         setVisualizerRender(DEFAULT_RENDER)
     }
     d3.select(`#${visualizerRender}_render`).property("checked", true)
+    if (settings.has("vd")) {
+        setVisualizerDirection(settings.get("vd"))
+    } else {
+        setVisualizerDirection(getDefaultVisDirection())
+    }
+    d3.select(`#${visualizerDirection}_direction`).property("checked", true)
 }
 
 // default module
diff --git a/visualize.js b/visualize.js
index 3b8cf69..17a000c 100644
--- a/visualize.js
+++ b/visualize.js
@@ -12,7 +12,7 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.*/
 import { renderBoxGraph } from "./boxline2.js"
-import { visualizerType, visualizerRender, installSVGEvents } from "./events.js"
+import { visualizerType, visualizerRender, visualizerDirection, installSVGEvents } from "./events.js"
 import { spec } from "./factory.js"
 import { iconSize, colonWidth } from "./graph.js"
 import { zero, one } from "./rational.js"
@@ -247,9 +247,9 @@ export function renderTotals(totals, ignore) {
     }
 
     if (visualizerType === "sankey") {
-        renderSankey(data, ignore)
+        renderSankey(data, visualizerDirection, ignore)
         callback()
     } else {
-        renderBoxGraph(data, ignore, callback)
+        renderBoxGraph(data, visualizerDirection, ignore, callback)
     }
 }