The setting of this game is a starship and the interactions therein:
” Stellar Dream tells a story about a colony ship set to find new worlds suitable for human colonization ”
So the actual action in this game is split between living conditions plot in and around the quarters of the characters on that ship, moving from planet ot planet probing and asessing - mass effect/dead space like game mechanic, then missions on the planets deemed suitable for actual -on site-
apraisal.
The next big thing about this game is the player motivations:
”
The player’s task is to bring the scouts home,
find a suitable home for the colony and establish diplomatic relations with alien life forms.
”
MC has to ensure harmony among the crew - ”bring the scouts home” this is where all the interactions inside the spaceship fall under - make them your primary mission to finalize these tasks first.
Next on MC„s list of -to do- is ”find a suitable home for the colony” - this is where MC talks about where to go, what planet, what for, with whom and what to get for the characters from said planets,
this is where the planetary missions fall under, these are the secondary objectives, after you end all you can do in and around the spaceship, you gather all the intel you need and go explore.
there is no need to finish them before the planet missio
Last task for the MC is to ”establish diplomatic relations with alien life forms”
these are the last objectives to go for, as they mean world buiding of foreign spaces,
planets, living conditions and new characters for MC to interact with.
Safe to say the characters already on the spaceship have the most content now and
MC should focus on their needs and cravings first in order to show gamers most
or all the scenes.