Brown venison in a large skillet over medium-high 8-10 minutes, breaking it up; drain excess fat.
Add onion and garlic; cook 3-4 minutes until softened and fragrant.
Transfer venison mixture to slow cooker.
Add beans, tomatoes, tomato paste, broth, chili powder, cumin, paprika, salt, and black pepper; stir well.
Cover; cook on LOW 6-8 hours or HIGH 3-4 hours, stirring occasionally if possible.
Adjust seasoning to taste before serving.
Serve hot with favorite toppings such as cheese, sour cream, onion, and jalapeños.