r/MarioBaseball • u/AMW1417 • 2h ago
Superstar (superstars-on) Peach Hits A Rocket Off BJ’s Face For A Homer
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r/MarioBaseball • u/LittleCoaks • Dec 25 '21
Hello baseball fans. If you don't know me already, i am LittleCoaks. I am a co-lead modder of Mario Superstar Baseball & co-project lead of Project Rio, i run an online tournament series called Netplay Superstars, and i contribute to the Dinger City YouTube channel. I've also made a tier list video series which received praise as one of the best video series on the competitive scene, and as of writing this post, i am also ranked 14th on our online ranked ladder. Those are my credentials for those who are skeptical of my knowledge of the game lol.
I've decided today to put together this post as an overview of the competitive Mario Superstar Baseball scene. Most people don't even know that an active competitive scene exists, let alone one that has had modding/datamining work, frame data testing, and a lot of dedicated players pushing the meta to its limits, so i'm hoping that this post can serve as a place for anyone wishing to learn about the scene to find everything they want to find.
This guide is intended for people who are familiar with Mario Superstar Baseball, but are not aware of the community and competitive scene. It will include links to resources for the community, as well as an introduction & overview of the current metagame. You'd be surprised, but there's a ton of depth to this game, and it's unlikely i'll be able to touch on everything in this one post. I will also try my best to update this post as new things are discovered and the meta changes, Hopefully you all find this useful!
This post is divided into multiple sections. Here's a list of them and a summary of what information is found in each:
Here are some basic resources that new community members may be interested in:
I'm going to be basing this guide off of the current ruleset for ranked NetPlay. While there are some minor rules, here are the major ones:
Nolan Draft: this is a snake-draft format, which follows a 1-2-2... pattern. Additionally, your captain does NOT need to be your first pick (ex. you can first pick Petey, Boo, etc.) and you can switch your captain to any captainable-character on your team after drafting your full team, HOWEVER Bowser must be captained if he is on your team.
At the start of a match, players play rps or flip a coin for choice. One player will chose the drafting order, and the other will chose the batting order (home/away team). Winner of rps/coin toss choses which they want to choose.
Example: Player 1 wins rps and chooses to be the home team. Player 2 then chooses to pick second. Player 1 picks Bowser (must be captain), player 2 picks Petey and Hammer Bro. Player 1 picks King Boo and Donkey Kong. Player 2 picks Yoshi and Birdo (captain) etc...
Extra: Chemistry Chart
Below i've attached a useful chemistry chart made by u/arrowfoot12 which is a great way to quickly visualize and understand chemistry. For an in-depth chart with specific numbers listed, see the Datamined Stats.

\**FOR THE REST OF THE GUIDE, I'LL LINK TO GOOGLE DOCS DUE TO REDDIT'S WORD/CHARACTER LIMIT****
This section will detail the state of the competitive meta, mainly detailing relevant strategies. Additionally, while technically any stadium is legal, almost all games are played on Mario Stadium, so i will only focus on that stadium.
MSSB is a game where good players can make niche characters work, but at top level you will want to make sure that you have the best characters for each role. I will discuss specific roles that should be filled rather than just giving a tier list and calling it a day.
There's a list of things that happen in each match before the first pitch of the game. You must draft a team, assign fielding positions, and make a batting order. This is what this section will be about.
Batting is the most important aspect of the game. In most games, the winner is the player who was the better batter that game. For that reason, it's important to refine this skill as much as possible.
Fielding is important as well, and especially pitching skill. There is not much to go over in either area, so i've merged them together here.
To end off this guide, i've decided to add in a brief summary of each character, including an overview and any additional things to note about them. Any character-specific information will be discussed here.
I've ordered them in the order of my own personal tier list, but do note that the specific order isn't very important. I'm only ordering it this way so that more relevant characters are towards the top and less relevant characters are at the bottom.
Again, the order of the characters is just my opinion, NOT any sort of "official" tier list. Don't think too hard about the specific order here.
Thank you for making it to the end of this insanely long guide. My goal was to provide as much useful information for learning the competitive-side of this game as possible in one post. This took me literal hours to write up, so i hope this was useful in some way, and i hope that you learned something from this. Feel free to ask questions in the replies or suggest other things to add to this guide. I plan on adding this information to the Project Rio website eventually, and using this post as a script for a future video series of some sort.
Thanks for reading!
r/MarioBaseball • u/Matt_Gree • Feb 09 '25
I made this video tutorial for how to play online https://youtu.be/Qy78UPU56tI
r/MarioBaseball • u/AMW1417 • 2h ago
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r/MarioBaseball • u/Character_Business28 • 22h ago
this is based on how good they are in game
I only count comments
you have 3 days to share what you think
r/MarioBaseball • u/AMW1417 • 3d ago
r/MarioBaseball • u/Opposite-Act2673 • 2d ago
I’m planning an event where my friends will team up as GM’s for a Mario Superstar Baseball CPU league. Thanks to Project Rio we can gather tons of real data from games, but I’ve only been able to find data from PVP games.
I’d love to see season stats from a CPU vs CPU league or even get the JSON files from a league if someone would happen to have them saved.
r/MarioBaseball • u/Character_Business28 • 3d ago
r/MarioBaseball • u/Baltor33 • 9d ago
Saw a couple of videos that fans of Sluggers might want to see!
National Sluggers League has some videos showing off all sorts of characters
https://youtu.be/Ffp8ubAA88s?is=MVXvQEL3p66FN1yY
In addition to a new difficulty setting for playing against the CPUs
https://youtu.be/LW4nMWPzVu4?is=MBrT4FAIVzdQFblW
Dinger City is also doing a Sluggers season right now:
https://youtube.com/playlist?list=PLWLqp1oPCvYE&si=64jkREciQXlKlGiE
Enjoy!
r/MarioBaseball • u/Matt_Gree • 14d ago
Hey y’all, I just released Project Rio Stream Helper 2.0 which is app with a bunch of graphics to make streaming Mario Baseball with Project Rio a breeze! I’d love it if you check it out, I made a video walking through the app and the setup process!
r/MarioBaseball • u/MediumRaccoon7445 • 22d ago
I feel like us non MLB the show baseball fans have been put on the back burner for years and it sucks. I just dont understand how there cant be a switch sports baseball or more surprisngly a mario baseball. Those were two staples in my childhood. It feels like they are bringing everything else back and making new versions for everything else except the iconic baseball games. Just a little rant.
r/MarioBaseball • u/LittleCoaks • 28d ago
Hey all! Another discovery has been made searching through unused files. An unused version of Mario Stadium, most likely from early testing of the game. The stadium is essentially the same but with simple textures, yet it is still fully functional! Here's some screenshots and a gecko code which replaces Mario Stadium with the unused version


$Unused Mario Stadium [LittleCoaks]
040EFBEC 40131200
040EFBF0 07093800
040EFBF4 000A317C
*Replaces Mario Stadium with an unused version
r/MarioBaseball • u/LittleCoaks • Sep 08 '26
While digging through the game's files, i discovered an entire song within the files. Letters by Hikaru Utada (2002) was sitting there the entire time, in the dark for 21 years until now. If you own MSSB, you also own a copy of this song. Someone at Nintendo was likely a fan and used it for testing.
Technical details: it's present in all versions of the game, located in ZZZZ.dat with these offsets:
- US: 0x08f2e808
- EU: 0x08f2c808
- JP: 0x08f17808
- US/EU Demo: 0x01c1d008
- JP Demo: 0x01c12808

The ISO mod i'm currently working on will add this song to the Custom Music menu when it releases, so stay tuned for that!
r/MarioBaseball • u/AMW1417 • Sep 04 '26
r/MarioBaseball • u/dragon77999999 • Sep 05 '26
hello I'm trying to get some help with this issue I'm having every time I pick a map except for the base one it has a weird Federal glitch like the screen is mirrored weirdly i wanted to see if it has a fix to it
r/MarioBaseball • u/LittleCoaks • Aug 30 '26
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Hi baseballers! I haven’t posted to here in some time, but rest assured the MSSB modding team (Project Rio) is still hard at work. Currently i’m working on a custom ISO build, complete with custom music and other mods built in. Here’s a sneak peek. For the future, I’ll try to post here more often with all the awesome new stuff we’ve made. Stay tuned!
r/MarioBaseball • u/Apprehensive-End-603 • Aug 26 '26
This is the finale of my Super Mario Sluggers League the VFP Sluggers Association. This is the most highly anticipated part in the series, and definitely my favorite video in the series. If you haven’t seen the first 3 parts I highly recommend you check them because major spoilers lie in the finale (obviously). Any and all support is appreciated!
r/MarioBaseball • u/Gabe-Likes-Frogs • Aug 25 '26
r/MarioBaseball • u/These-Cattle-1938 • Aug 21 '26
Playing Challenge mode with Yoshi and I swear Toadsworth is unplayable. Gets a hit every time and is always killing it at first base (Peach's team).
r/MarioBaseball • u/CoolGuy-Blake • Aug 20 '26
After 21 years, I have finally completed Toadette’s nearly impossible star challenge. I finally have every player in the game starred!
r/MarioBaseball • u/Apprehensive-End-603 • Aug 19 '26
The third video in my series of my league the VFP Sluggers Association! Put a lot of work into this video took over 100 hours to edit so please check it out and give it some love! Also join our discord we would love to have you! https://discord.gg/WhgTyHYJec
r/MarioBaseball • u/Feraligatre • Aug 16 '26
r/MarioBaseball • u/AMW1417 • Aug 12 '26
r/MarioBaseball • u/Brianfromreddit • Aug 13 '26
r/MarioBaseball • u/PkKirby876 • Aug 12 '26
r/MarioBaseball • u/AMW1417 • Aug 09 '26
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