Cool idea! You know what though?
This could be player driven, the hell with coded kiosks.
You know how "numbers" operations work IRL? They're picked daily or weekly based on unpredictable things like sports scores or stock prices or even weather measurements. Deathball scores seem perfect, you're not betting on a team, you're betting on a random number which happens to be generated by a game. Something independently verifiable so that customers don't feel like the game operator is rigging the results.
Anyway, point is, IRL "numbers" rackets are entirely a human exercise which don't depend on any infrastructure or regulation at all (code words meaning "no code"). One reason I love this idea is 'cause it could employ people. Just needs a player with a bankroll and a player to devise the game. Maybe the same person, maybe not. As long as someone can plan a profitable game, someone should be willing to bankroll it.