If you prefer playing without external cheat devices, you can use built-in game mechanics to gain an advantage:

Action Replay Max / Gameshark

This guide provides verified cheat codes for both real hardware (via cheat devices) and emulators.

If you’re looking to bypass the grind or experiment with "what-if" scenarios, using cheat codes—primarily through or CodeBreaker —is the most effective way to tilt the scales in your favor. Understanding the Codes

(Your money will not decrease when upgrading units or buying parts.)