Overview
Basically, this guide will show you how to re-map the action buttons in the game to the numpad for much more comprehensable usage of cheat codes within Thrillville: Off The Rails (PC/Steam Edition or whatever this edition is called :P)
How to do it
K, here’s how it goes:
Action button 1= X
Action button 2= Δ
Action button 3= ⬜
Action button 4= ◯
So all you have to do is click Escape, to bring up the menu, click on options, then the customise button to the right of the label saying controls, click on default, then do as follows:
Set (ON THE NUMBER PAD):
Action button 1: 2
Action button 2: 8
Action button 3: 4
Action button 4: 6
When completed keep on going back till you get the a menu that says keep changes and click it.
Once you exit, you can use the standard PSP cheat codes and they should work.