The game cannot be accepted, it must be a SNES game
(it can become so via extension, which the game jam does not accept)
If you code an engine (in asm), it's not counted during the jam.
The only thing that is "counted" is the game during the game jam , before that you can code an engine, a library etc
And it's highly recommended because it's nearly impossible to make a full asm game from scratch for the SNES.
This is why the gamejam is announced well in advance to let people prepare in terms of code and assets (because yes open game art or other is accepted for assets).
Dommage qu'il n'est pas fini , parce que le peu que j'y ai joué est intéressant , les graphismes sont plutôt jolie et il y'a un sentiment de "liberté" dans la construction/terrain.
Par contre, je trouve que les villes qui se développe automatiquement est un peu gênant pour placer ensuite ces tourelles.