Deep Space Settlement is a 4X real-time strategy game focused on empire building and grand-scale space battle.
Somebody asked about the biggest cruiser possible. This is NOT it. There won't be a hard limit preventing you from trying to build longer and longer cruisers, but you will be limited by energy supply and engine capabilities. So, you might be able to build such a long cruiser, but you'll need to evalute if it is a useful unit. You might have problems accelerating it, ha. What this also means is, that with better tech, you will be able to build longer cruisers.