Related Clues:

• Father of Romulus and Remus
• Pathfinder explored it
• Maker of Twix and Starburst
• See 123-Across
• Earth's neighbor
• Spoils of war
• Heavy book
• Utopia Planitia setting
• Big name in candy
• "War of the Worlds" world
• Twix candy maker
• Utopia Plains setting
• Ares to the Romans
• Snickers producer
• Serena's rival