Whats the best way to make a long Terrain top down space shooter?


This question is not hard to answer by some seasoned developers, I want to know what is the best way to create a long Terrain for a top/down space shooter like Ikaruga should I create multiple terrains or a single big terrain? I want to make a terrain for a top/down space shooter.

I am pretty sure so many games designers here wonder the same.

What are your thoughts…