Thanks for the report.
I added hiscore support for this game back in 2021, and removed it later after discovering that bug you mention, but it seems a contributor added it back.
For now you can play this game normally if you disable hiscore.
@dink i think there was a reason we decided to disable hiscore for this game instead of fixing that black screen, like maybe the hiscore.dat entry looked wrong ?
Edit: i found our earlier discussion about it, the entry in hiscore.dat seems to save game timers, which seems extremely fishy
Edit2: and that game actually doesn't need hiscore.dat support, they are already saved through nvram, i'll remove the hiscore flag again (with a note this time)