Hi.

Thanks for this port.

Copy-paste from #openbsd-gaming about my experiences:

<izder456> thfr: another gamemaker game worth testing is the fan (prequel?) to undertale, undertale: yellow https://gamejolt.com/games/UndertaleYellow/136925
<playonbsd> Game Jolt - Share your creations
<izder456> oh i just booted my copy of undertale with butterscotch. the audio is quite compressed for me.
<izder456> ~ $ rcctl get sndiod flags
<izder456> -z 480 -b 1920 -s default -m play,mon -s mon
<izder456> i have these settings for sndiod
<izder456> UNDERTALE: Yellow seems to boot
<izder456> audio still seems compressed with removing the -z and -b flags from sndiod

I also tried booting the DELTARUNE Ch. 1-2 Demo as well. That booted
too.

I do want to note that for the 3 games I tried booting (UNDERTALE,
UNDERTALE: YELLOW, DELTARUNE Ch. 1-2 Demo), all had the compressed
audio issue regardless of sndiod flags with or without -z and -b

I'll play through as much as I can of both DELTARUNE and UNDERTALE:
YELLOW in the following days as it seems you're focusing on UNDERTALE.

If people want another gratis game to test with this port, UNDERTALE:
YELLOW is completely free, FYI.

Thanks again, 

On Sat, 26 Sep 2026 17:52:38 -0700
Thomas Frohwein <tfrohwein@fastmail.com> wrote:

> On Fri, 25 Sep 2026 22:51:05 -0700
> Thomas Frohwein <tfrohwein@fastmail.com> wrote:
> 
> > Hi,
> > 
> > I know it's late in the release cycle for new ports, but this one
> > here seems relatively straightforward and may be worth for some to
> > still get in before lock.
> > 
> > Butterscotch [1] is a runtime for bytecode-compiled GameMaker games.
> > Not all are built this way; some are compiled into native/C++ which
> > can't be run.
> > 
> > The project may be young, but cult indie RPG Undertale is what this
> > runtime has been most closely developed on and it runs quite well
> > (see my gameplay recording at [2]).
> > 
> > Some other GameMaker games also run, but some are still buggy with
> > Butterscotch. DELTARUNE (the spiritual successor to Undertale) seems
> > to also be quite well supported, and its first 2 acts can be
> > downloaded for free [3], for example to test butterscotch. Other
> > games that I've checked that seem to run reasonably well on short
> > testing are:
> > 
> > Cook, Server, Delicious 3, Home (2012), Mable & the Wood, Uncanny
> > Valley, and Va-11 Hall-A. But Undertale would be worth it alone for
> > many who know the game...
> > 
> > In order to run a GameMaker game, locate `data.win` or
> > `assets/game.unx` und pass it as the argument to butterscotch.
> > 
> > Butterscotch supports various versions of SDL or GLFW as backends,
> > and I chose SDL3, as it seems the most future-proof option.
> > 
> > The port is otherwise fairly straightforward and quick to build with
> > gnu99 C-compiler and SDL3.
> > 
> > ok?
> 
> I just got pointed out that my draft relied on an uncommitted
> DIST_TUPLE update. Here new tarball that avoids this; also enables
> DEBUG_PACKAGES.
> 
> This is only for after ports tree unlock then. I'd still take ok's or
> requests for after unlock.
> 
> > 
> > [1] https://github.com/ButterscotchRunner/Butterscotch
> > [2] https://video.gamerstavern.online/w/fyX9Mfi5RaFfTo2UyBgNMy
> > [3] https://tobyfox.itch.io/deltarune
> 



-- 
iz (she/her)

> I say mundane things
> so the uninteresting
> just might get noticed.

izder456 (dot) neocities (dot) org