Island Survival: Sign-In Gets Me a Goddess Big Sister from the Start

999 people received a sign-in System and were assigned to 888 islands to survive!

[Ding: Congratulations, Host! Sign-in successful. You have received an S-rank legendary reward: one Raptor F750 pickup truck.]

[Ding: Congratulations, Host! You successfully recruited one beautiful woman. Your sign-in System has leveled up.]

[Ding: Congratulations, Host! Synthesis successful. You have received an S+ Heaven-Gifted Divine Artifact: a Quantum Universal Cutter.]

[Ding: Congratulations, Host! Your island castle is complete.

Other survivors: We all got sign-in Systems, so how come I'm still paddling a bamboo raft while he's already cruising around in a huge yacht?

I haven't even got enough to eat, and he's already got snacks to go with his drinks?

I'm still living in a cave, and he's already moved into a castle!?