Here's a couple of cheats for the Sims 2 Castaway:
Launch the game and then we must bring up a gnome, who will give the other cheat codes:
- Gnome: L+R+Up+X+R
- All the Plans: X+X+R+R
- Miscellaneous resources: Square+triangle+up+down+R+down
- Max of food and resources: Square+square+square+square+L
Thanks to nanou
for this tip.