Because Alpha 3 is a complex game, cheat codes are scattered across forums. Reliable sources:
Here are some of the most popular Dai-3-ji Super Robot Taisen Alpha cheat codes: dai-3-ji super robot taisen alpha cheat code
2061C440 3B9AC9FF (This provides 99,999,999 credits, allowing you to fully upgrade every unit in your roster instantly). Because Alpha 3 is a complex game, cheat