Skip to main content

You can thank ROM hackers for Backyard Baseball’s comeback

Save State promotional image with Backyard Sports key art.
Backyard Sports / Digital Trends
Promotional image for Save State. Game Boy on a purple background.
This story is part of Save State, a bi-weekly column focused on the evolving nature of retro gaming.

At first glance, Backyard Baseball ’97 might seem like a nondescript rerelease. It’s a straightforward, no-frills Steam version of Humongous Entertainment’s kids’ game that kicked off the entire Backyard Sports franchise. Outside of Steam achievements, it’s as if the original game, first released in 1997, is running on your modern PC. That might seem simple, but after speaking to the developers behind Backyard Baseball ’97, it turns out that bringing back this classic required a lot more effort than might initially meet the eye.

Playground Productions worked with Wrestlequest developer Mega Cat Studios to bring Backyard Baseball ’97 back, but it didn’t even have the source code to work with. It took the combined efforts of experienced ROM hackers, Backyard Baseball modders, and a lot of trial and error to trick modern PCs into thinking they’re the right hardware to play Backyard Baseball ’97. Never take a rerelease like this for granted, as it can take a lot more effort than meets the eye.

Recommended Videos

How Backyard Baseball ’97 came to be

Sometimes, certain gamers have a desire to engage with the games they play on a deeper level. For me, that came in the form of writing about games. For senior engineer John Simon, that came in reverse engineering his favorite games.

“Every once in a while, I play a game and really love the game, but there’s no replayability. So what do I do? I start reverse engineering the game, modding the game. And even for the more niche games I do this with, there’s also been a community that’s appreciative of it,” Simon tells Digital Trends.

Gameplay from Backyard Baseball '97.
Playground Productions

Simon started with Darksiders, creating tools that speedrunners still use to this day before eventually turning his attention to Backyard Sports. He created modding tools that serve as the backbone for the Backyard Sports Online project, which revived online play in some later titles in the series. That caught the attention of Mega Cat, who Playground Productions had partnered with after obtaining the rights to Humungous Entertainment’s Backyard Sports series.

Mega Cat co-founder James Deighan tells Digital Trends that most of Mega Cat’s developers “met through ROM-hacking and retro gaming communities.” One such developer is senior engineer Luke Usher, who had experience in ROM-hacking and created an Xbox emulator for modern PCs. After Mega Cat struck a deal with Playground Productions and hired Simon, a team of around 10 developers went to work on bringing Backyard Baseball back.

Playground Productions shared many disks and files full of data relating to this long-running series. There was just one problem: Even with all those files, Mega Cat Studios did not have the source code for the original Backyard Baseball.

“If we were modifying a game where we had source code, it would just be a matter of pulling a standard C++ compiler off the shelf, compiling the game, and picking up from where the original developers left off in 1997,” Simon says. “We did not have that luxury, unfortunately, so it was quite a challenge reverse engineering the original formats, decompiling the scripts, and then recompiling the scripts so that the game would run again.”

A decompiling of Scumm engine commands for Backyard Baseball '97.
This is an example of how Mega Cat Studios decompiled engine commands in order to add new features like achievements to Backyard Baseball ’97. Playground Productions

When it comes to a remaster like Doom + Doom II, remaster developers often have the luxury of building on the original game’s source code. At times when they don’t, we get full-on remakes like Silent Hill 2. Playground Productions wanted Mega Cat to re-release the first Backyard Baseball game on Steam, though, so it had to find a way to get that done. Mega Cat did so by employing tricks primarily used in the modding and ROM hacking scene.

To do this, Usher explained to Digital Trends that Mega Cat had to create a “patching framework that hijacks the game when you try to load it.” From there, the team would “have a chance to go in, fix bugs, and make the changes needed to get it up and running.” In my interview with the Mega Cat team, it became clear that this was a lengthy process of trial and error, as Humungous used a LucasArts point-and-click game engine called SCUMM that had a lot of weird eccentricities that wouldn’t work for a game released on Steam in 2024.

Testing Backyard Baseball 97.
After determining what changing values in the memory address for hits does, Mega Cat Studios could create its own debug commands to control where hits went to help with testing. Playground Productions

Looking at the innards of the hacked Backyard Baseball disc and code, Simon says the original was an “insane technical achievement” as Humungous Entertainment got a 3D sports game working on a 2D point-and-click game engine. Still, Mega Cat Studios required very “specialized” work, even for smaller additions like achievements. The result is something that isn’t so simple to explain.

“It’s kind of hard to put a specific word on it, like emulation. It’s not quite emulation,” Simon says. “It’s more that we’re running the original game, and we’re building an environment around that original game where it thinks it’s running on a computer from 1996 running Windows 95, even though it isn’t.”

Just the beginning

The release of Backyard Baseball ’97 today isn’t the end of the road for Mega Cat Studios, as Playground Productions promises to bring Backyard Sports games to more platforms and eventually turn it into a multimedia franchise. In the short term, Mega Cat is doubtful that Backyard Baseball ’97 can come to consoles. Deighan says that’s “untenable” with the current “not quite emulation” version of the game they have because of “what you need to do on modern consoles to meet their platform standards.”

Playground Productions and Mega Cat Studios’ partnership will continue, with the pair already committing to the releases of Backyard Soccer ’98, Backyard Football ’99, Backyard Baseball ’01, Backyard Basketball ’01, and Backyard Hockey ’02 in the future. Deighan believes the studio’s “foundational” learnings from Backyard Baseball ’97 can be applied to any potential rereleases of the other Backyard Sports games that used the SCUMM engine. Deighan thinks the Mega Cat Studios team is ready to do that because, in practice, these challenges hark back to the “fundamentals of ROM hacking” that many Mega Cat developers are familiar with.

A home run in Backyard Baseball.
Playground Productions

The source code is lost for everything other than the Game Boy Advance and PS2 Backyard Sports games, so it’s undoubtedly a challenge Mega Cat Studios will continue to face as it helps Playground Productions revive this beloved series. The rereleases will take a lot more grit and effort to create than it might initially seem. While Simon seems eager to continue to dig into a series he loves and wants more of, he is also hopeful that a Humongous Entertainment developer can come forward with the source code and help fast-forward this long-awaited revival.

“Just from a preservationist or historical angle, it would be so cool to see the original source code,” Simon says. “I’m holding out hope that one of the Humongous developers has a box in their attic with a bunch of floppy disks, and we’ll get to see it one day.”

Backyard Baseball ’97 is available now for PC on Steam.

Tomas Franzese
Former Digital Trends Contributor
A former Gaming Staff Writer at Digital Trends, Tomas Franzese now reports on and reviews the latest releases and exciting…
Where to find the cartographer in Emerald Stair in Avowed
Environmental shot of Galawains Tusks Slumbering Fields in Avowed.

You will probably have a good grip on all the tips and tricks needed to beat Avowed by the time you reach the second zone, Emerald Stair. However, no matter how many abilities you have or how good your gear is, finding a missing person with just a vague hint never gets any easier. We already helped Sanza find a missing cartographer in Dawntrail, but he has lost another in Emerald Stair and needs us to track them down. Like last time, the Avowed won't tell you where to go so we explored the entire region to show you exactly where to track them down.
Where to find the cartographer in Emerald Stair

The first cartographer quest at least gave you the general direction to find them, but this time we are only given the name of the area within Emerald Stair. The area in question is called Naku Tedek and is the isolated island on the south end of the map.

Read more
3 PlayStation Plus games to play this weekend (March 14-16)
The PC version of Ghost of Tsushima Director's Cut.

The beginning of March was light in upcoming PS5 games, but the long-delayed Assassin's Creed Shadows is right around the corner. But we still have an entire weekend to fill before it comes out, which is where your PlayStation Plus subscription pays off. The Essential games for March were incredibly strong, but the back catalogue of Extra and Premium games has the perfect selection to get you excited for all the biggest upcoming video games, like Death Stranding 2. Or, it could be the perfect way to find a fun, bite-sized game to hold you over until next week's releases hit and dominate your time. As always, I have hand-selected only the best games in PlayStation Plus for you to play this weekend.
Ghost of Tsushima: Director's Cut
Ghost of Tsushima Director's Cut - Announcement Trailer | PS5, PS4

Even before Shadows was announced, Ghost of Tsushima was touted as being the Japanese AC game that Ubisoft should have made years ago. While that is a reductive way to frame it, there's no denying there are similarities, and the two will be directly compared. Whether you plan on playing Shadows or not, Ghost is a magnificent game that still boasts some of the best graphics on PS5. Exploring the vibrant island of Tsushima as you follow the wind and animals rather than waypoints gives you a deep appreciation for the world you're fighting for. If you missed out on the Director's Cut content, jumping back in for the Iki Island DLC is perhaps the best part of the experience.

Read more
3 Xbox Game Pass games to play this weekend (March 14-16)
Assassin's Creed Odyssey review

Game Pass serves many functions as a service. Some use it to play the best Xbox Series X games on release, others lean on it between games, and everything in between. One of our favorite ways to take advantage of the massive Game Pass catalog is in preparation for upcoming Xbox Series X games. Whether it be playing previous games in a series to get caught up, or games in a similar genre to get in the mood, Game Pass has what you're looking for. We have our eye on Assassin's Creed Shadows next week just like you, but what about this weekend? Here are the best Xbox Game Pass games to boot up over the break.
Assassin's Creed Odyssey
Assassin's Creed Odyssey: Launch Trailer | Ubisoft [NA]

All the best Assassin's Creed games are on Game Pass, but we feel Odyssey is the best of them since transitioning into RPGs. Historically, this is the earliest game in the timeline, though that doesn't matter much since there are only loose threads connecting the games at this point. What does matter is how vast and enjoyable a world this is to explore. It isn't quite as bloated as Valhalla and will get you back into the groove of parkouring, stealthing, and fighting all over again. The story here is also one of the best in the series if you have the time to go all the way with it. But even just dabbling in it so you don't get burned out before Shadows is a great way to prepare yourself.

Read more