{
  players: { min: 1, max: 5 },
  teams: [
    {
      name: 'humans',
      card_min: 1,
      card_max: 1,
      players: { min: 1, max: 5 }
    },
    {
      name: 'aliens',
      card_min: 0,
      card_max: 1,
      players: { min: 1, max: 1 }
    }
  ]
}