prevent occlusion culling with far objects

I have a scene where objects are far from each other but they are visible from each other in unity editor. But when i play in the game mode they are not visible and gets generated when player gets close to them.

I have set off the occlusion culling in scene camera as well as from the main camera inspector.

Any method how to prevent this? My example game is here. The player has to keep pressing the up arrow :arrow_up: button to play the game.

All the objects are getting generated after reaching near them.

set the main camera and the scene camera clipping panes to 10000