It has been tested on the sz81 emulator (with and without ZXpand), a soundless TS1000 with a TS1016 (16K), and of course a system with a ZXpand+. It was also tested on the EightyOne emulator; however, sound was a bit choppy. If your on a windows system YMMV. API calls to the ZXpand+ ROM were avoided. As such, it should also be usable on a 16K system with original ZON X-81 hardware (you'll need to remove '>' from the SAVE). All sound effects were kept simple. Feedback and improvements welcomed (add files to your pipepanic directory and build with "make TARGET=spp").