Several points :
- Super Search is your friend !
'rpg' or 'adventure game' would provide useful links like
RPG rolls or Rule Based Game Engines for example
- Use strict shouldn't be avoid !
Just understand that it will HELP you avoid mistake, and find somes quite tricky !
- use strict and lexically scoped variables (my) don't prevent you to use large quantity of data
(I'd suggest to store your data in (separated) files and load them in your lexically scoped hash, for example, at execution.)
Anyway, as an old DM and Perl lover I'd be glad to help if you have more specific questions...