Many updates.

src/components/new-game/NewGame.jsx

@@ -57,19 +57,23 @@ class NewGame extends React.Component {
             checkedColor: props.colors[0],
             gameId: typeof props.gameId === 'undefined' ? -1 : props.gameId,
             gameName: props.gameName || '',
-            downPayment: 0.2,
-            loanInterest: 0.2,
+            downPayment: 0,
+            loanInterest: 0,
             maxDebt: 50000,
             auditThreshold: 250000,
             startingCash: 5000,
-            startingDebt: 5000
+            startingDebt: 5000,
+            trade: true
         };
     }
 
     handleInputChange = e => {
         const target = e.target,
-              value = target.type === 'checkbox' ? target.name : target.value,
-              name = target.type === 'checkbox' ? 'checkedColor' : target.name;
+              value = target.type === 'checkbox'  && target.name !== 'trade'
+              ? target.name : target.value,
+
+              name = target.type === 'checkbox' && target.name !== 'trade'
+              ? 'checkedColor' : target.name;
 
         this.setState({
             [name]: value
@@ -183,6 +187,17 @@ class NewGame extends React.Component {
                             step={1000}
                             value={this.state.startingDebt}
                             onChange={this.handleInputChange} />
+                  <Row>
+                    <Col width='12'>
+                      <label>
+                        <input type='checkbox'
+                               checked={this.state.trade}
+                               onChange={this.handleInputChange}
+                               name='trade' />
+                        Enable Trading
+                      </label>
+                    </Col>
+                  </Row>
                 </div>
                 <Row>
                   <Col width='12'>