Online brackets that pit everything from fictional characters to weddings against each other are popping up all over the Internet, and there are plenty to choose from. We brought you a list of 10 such tournaments last week, and here are nine more to keep the ball rolling.

1. SUPERHERO MARCH MADNESS

Collider’s Superhero March Madness bracket began with 64 mutants, caped crusaders, and tight-wearing meddlers, and the tournament is now down to its Sweet Sixteen round. Two different versions of Batman are still in the running, and the two Gotham vigilantes are joined by Iron Man, Spider-Man, Groot, and more. Vote for your favorite, but remember: With great power comes great responsibility.

2. DABWAHA BOOK TOURNAMENT

The annual DABWAHA book tournament is about to kick off, and it's a must for the voracious readers out there. As usual, 64 books (all published in 2015) will compete in eight categories: Contemporary, Historical, Novella, Series/Category, Paranormal/Fantasy/SciFi, New Adult, Novel with Strong Romantic Elements, and an eighth category decided by readers. The match-ups are here. Voting begins March 15. Oh, and in case you were wondering, DABWAHA stands for "Dear Author Bitchery Writing Award for Hellagood Authors." It's going to be a lot of fun.

3. JUNTO MARCH MADNESS

The Junto is a lively American history blog curated by graduate students and junior faculty members, so you know the content is fascinating and brainy. Their March Madness tournament asks readers to vote on the academic articles they think have shaped our understanding of early American history the most. The categories are as follows: Atlantic World, Gender, Economic and Social History, American Revolution, History of Ideas, Historiography/Theory, Native American History, and Slavery and Race Formation. This would be a good one to pass along to any serious history buffs you know. Second round voting will begin this week.

4. MARCH BOOK MADNESS

Looking for a way to get your students excited about reading? March Book Madness is a fun tournament series designed for schools, and it features three separate brackets in which to participate (each one focuses on a different age group). Voting is now open for the first round, so why not add a little competitive spice to your classroom's reading assignments. Check out their list of tips on how teachers can get students to participate and have fun.

5. NEW YORK STATE MUSIC

NYS Music, which bills itself as "New York State’s Music News Source," is staging a tournament featuring up-and-coming bands from across the Empire State. Not familiar with the contenders? You're in luck: NYC Music includes plenty of links, so you can hear the 64 groups for yourself. The aim is to introduce people to the exciting new music being produced in New York, and it's a neat way to expand your tastes. Voting is open, but be sure to listen to the bands first!

6. THE PRETTIEST BRACKET EVER

Even nuptials get the bracket treatment at the wedding-planning website Style Me Pretty. Thirty-two types of weddings faced-off (regions are classic, modern, rustic, and wildcard), and voting is already in the third round. The Elite Eight is taking place on Facebook now, so catch the virtual bouquet and make your voice heard.

7. MARCH METAL MADNESS

What is the greatest metal song of the 21st century? A tournament from the metal heads at Loudwire aims to find out, and their readers will be helping them decide. March Metal Madness is now in the second voting round, and the songs are divided into the Headbanger region, the Stage Dive region, the Devil Horn region, and the Mosh Pit region. Each matchup features videos, so you can refresh your memory before voting.

8. BEST FANBASE

Pop Crush is looking for the pop star with the most loyal and ardent fans. Opinions about pop supremacy can get pretty strong, and if you think you have the guts to participate, voting is now in the second round. Will Beyonce’s BeyHive defeat Demi Lovato’s Lovatics? Can Katy Perry’s KatyCats beat One Direction’s Directioners? We shall find out...

9. STAR WARS: THIS IS MADNESS

Love Star Wars? Of course you do, young Jedi. This is Madness is an annual event from StarWars.com where fans vote for their favorite characters from the Star Wars universe. This year is special, as favorites from The Force Awakens like Finn, Rey, BB-8, and Poe Dameron are eligible. Voting begins March 14 and continues through the April 4 championship round. If you're having trouble deciding, you know exactly what to do: It's as simple as using the force.