Endless runner game tiles spawning 2D

[ilya369]

I have a script that generates map for my runner game, using random tiles

void Update()
{
    if ((instantiatedPrefab == null) ||
        (instantiatedPrefab.transform.position.y <= spawnPositionY - tileScale))
    {
        for (float i = 0 - (tileScale * (mapWidth / 2)); i <= mapWidth / 2; i += tileScale)
        {
            instantiatedPrefab = Instantiate(tilePrefabs[
                UnityEngine.Random.Range(0, tilePrefabs.Length)
                ], new Vector2(i, spawnPositionY), Quaternion.identity, mapHolder);
        }
    }
}

Each tile falls down using this script:

void Update()
{
    transform.position -= new Vector3(0, fallSpeedController.fallSpeed * Time.deltaTime, 0);
}

The fallSpeed is constantly increasing.
As fallSpeed grows, the gaps between rows become bigger.

What can I do to fix these gaps?

[ilya369]

I fixed it by changing the camera background color, but I’d still like to know the proper way to fix it