It might be cool, but that would have taken a lot more development time. Developers can’t just push a button and immediately have it playable on other platforms, you know! It takes time, money, and effort. They’d need the whole dev team to work on it, for multiple reasons.
- First and foremost, Nintendo owns the rights to this game, since they paid for the dev costs and helped with the development and publishing. Team Ninja would need to offer them a substantial amount of money to get it on other consoles.
- For one thing, you can’t just expect the game’s code to work perfectly on a PS4 just because it does on Switch. Look at Genshin Impact, where it can run well on mobile devices but not a PS4. You need to perform optimization on it.
- Many UI elements are specifically tailored to one system or another. If the game’s stylized in a way that the A/B/X/Y buttons look different, you can’t just use those on a system where they’re green, or replaced with symbols. Gotta get the graphic designers and the UI team in on it!
- Alright, you have your game optimized for PS4, and the button graphics have been changed to symbols. Now you need to make sure the online mode works. You need to completely redo the framework for the online mode, since Switch, PC, PS4, and Xbox all have different servers. You also need to have some server space in order to host the PC version’s servers.
- Speaking of PCs, you’ll need a way to set things up so that people with less powerful PCs can play. Not all of us can have the latest gaming PCs with RTX graphics cards. Get the UI team back in.
- Since the game’s been out on Switch for a while, there needs to be a reason to buy a different version over this one. If I already have the Switch version, what makes the PS4 version lucrative to me? A different set of characters? An exclusive level? An art book? There’s gotta be more than just “oh it’s on PS4 now” if you want people to get it.
- Finally, there needs to be a lot more bug testing to make sure one system’s unique properties don’t cause issues. Even multiple ports of one game can cause issues, like when Final Fantasy 15 added Steam Workshop support, but it broke the Windows Store version.
In the end, it’s a lot more trouble than it’s worth, especially with exclusivity rights.