Could it be... a bounce challenge entry?
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Turboat Cartridge MSX Computer - Import MSX Brazili ...
Moon Patrol Cartridge for MSX - Import MSX Brazilia ...
Chess for MSX Computer - Import MSX Brazilian Video ...
Hyper Sports Cartridge for MSX - Import MSX Brazili ...
Overview of building up the fair
The openMSX booth
mth talking to Huey
GuyveR800 working in Moonblaster
Sonic on a turbo-R