a alien pet (can drope from aliens it will give u a pet when picked up and will attack for u can die has 200 hp 10 dmg 5 def (if possible) also make it so the pet when dieing if u can spawn 1 more alien

make more aliens and ships also different pets for each alien like snaggletooth sugested

and add different bioms

Nice idea, but animation and art work ... well it looks like 10 years old child made it.²
and make a boss alien, that can respawn when you break one space ship. a configuration for choice the intervals of days that the ships comes is a nice idea (3 in 3 days, 10 in 10 days, only in full moon, just in summer and winter, etc). is a very nice mod, but every night its occours... and no one painfull enemie (the bosses)