Lorelei Simulator

Simulate thousands of Pokémon Gen 1-2 AI move decisions.

GUI version

This isn't available yet. See here: https://github.com/SnowyMouse/lorelei-simulator/issues/2

Command-line tool

What you need:

• a ROM (English Pokémon Red, Blue, Yellow, Gold, Silver, and Crystal are all supported)
• a save state (supports SameBoy as well as any BESS-compatible save states)

Note: This save state must be made just before the AI begins making a decision.

• In Gen 1, the AI decides the moment you select a move, thus you can make your save state in the FIGHT dialogue with your cursor highlighting a move.
• In Gen 2, the AI decides just before you have the option to select a move. As such, you need to make your save state either when a Pokémon is doing its cry (in the case a Pokémon is being switched), or at the very end of a turn.

Note that Gen 2 is considerably slower than Gen 1: https://github.com/SnowyMouse/lorelei-simulator/issues/1

Then, open a command-line and run the following command:

lorelei_simulator_cli path/to/rom path/to/savestate

You can add additional parameters:

• -j <JOBS> to specify thread count (by default it will use however many logical processors your CPU has)
• -t <TRIALS> to limit how many trials to calculate (by default, it will keep going until you press CTRL-C)
• -q to not print anything until finished (by default, you will see a live update)

Provided you give a correct ROM and save state, you will see the output in a table.