Found this over at AA earlier so might as well put a post up - here's what was said alongside the image above:
There are three categories in the competition:
- BASIC games (any BASIC variant, so you can make your game in the standard BASIC or if you like any BASIC expansion)
The competition is open to all 8-bit platforms, the only exception we make is for the TI-99/4a.
The competition started on May 14th, but you have more than ten months to submit your entry.
Thanks to the collaboration of Fundación Museo ICATEC (an Argentine Computer Museum) there will be prizes awarded to the first place of each category.
sure this has been worked out properly though, there's nothing in the rules to stop people writing new BASIC extensions of their own that essentially run the entire game... either way, linkage here