levels.json

{
    "1":{
        "cases":[
            [1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
            [4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],
            [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
            [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
        ],
        "settings": {
            "waveSpawnInit": 1,
            "waveSpawnRatio": 2,
            "waveMax": 3
        }
    },
    "2":{
        "cases":[
            [0,0,0,4,0,0,0,0,0,0,0,0,0,0,0,0],
            [0,0,0,1,0,0,1,1,1,0,0,0,0,0,0,0],
            [0,0,0,1,0,0,1,0,1,0,0,0,0,0,0,0],
            [0,0,0,1,0,0,1,0,1,0,1,1,1,0,0,0],
            [0,0,0,1,1,1,1,0,1,0,1,0,1,1,1,1],
            [0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0],
            [0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0],
            [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
        ],
        "settings": {
            "waveSpawnInit": 3,
            "waveSpawnRatio": 2,
            "waveMax": 5
        }
    }
}