How do I use them? - Save your current game. Backup your /data/main.scm by renaming it to something like mainORIGINAL.scm. Now put the SCM file from the Tool's ZIP into your data folder and rename it to main.scm like the original was. Load up your game. Most code tools will alter your save automatically and prompt you to save. Save your game (preferably into a different slot than it was loaded from). Now rename the SCM to whatever tool it is (or delete it) and rename your backup back to main.scm like it originally was. Load your save you just made and continue playing as you would.
What makes Code Tools so special? - First and foremost, because they are designed to work with your existing game, something previously thought next to impossible and/or worthless. Also, there are SOME things that trainers aren't made to do that some of the tools can.
Uniquecall v1 - Does everything from telling you WHICH Unique Jumps you're missing, to assisting you in studying the inner workings of each one.
Ancestral Recall v1 - MANY people get stuck on 99% and wonder what they have left. It doesn't matter if you're at 99% or started a new game. This mod will take your existing save game and tell you what all else you need to complete to get 100%.
Time Vault - Replaces Save N Play. Simply play your original game until you can't go any further, load up Time Vault, use it to pass the ones you can't, go back to the original game and play on. No more searching for host or waiting for your game back. updated 03 Sept 05. Updated to credit you for the 3 Unique Jumps during G-Spotlight. updated 04 Sept 05. Updated to remove car list completer into a separate mod that's far more flexible. (2nd pic is now of Solarbond) updated 20 Sept 05. Updated so that Time Vault will now INSTANTLY pass any Rampage you start with it as well as credit you with any Unique Jump you start with it, whether you meet the pass criteria or not. updated 22 Feb 06. Updated so that Time Vault will also increment your Rampage stat if used to pass a Rampage.
Solarbond - This is the car list completing tool. It used to be part of Time Vault which was bad becuase you had to purchase Sunshine Autos with it. Now you can use it anytime after you own SSA. It will spawn all the cars to the current list and continue to do so until you complete them all or opt out of it. Dieing or getting arrested will start it over again.
Brass City - This unlocks all buyable assets and gives you the $400g you need to buy them. Note: TWO SCMs are included. One to unlock the assets with and one you need to play Shakedown with later on so that the game doesn't try to unlcok them twice.
Shatterstorm - This warps you around, collecting all the packages for you.
Wanderlust - This completes all Unique Jumps for you.
Oriflamme - This unlocks all shop weapons and gives you $200g to use.
Fastbond - This unlocks all parked vehicles in the game.
No Army - As the unimaginative title implies, the military will no longer spawn around Fort Baxter. Not a big change, but can be useful.
Updated 03 Sept 05. The VC Code Tools system prior to that included batch files and had instructions that were meant to be easier, but caused more confusion. From this point on, the VC Code Tools will be like the GTA3 ones where the user will do all the file swapping manually to keep it simple.