Using this Trainer:

Launch the trainer first, then launch the Game and then Press F1 at the Main Menu.

Listen for "Activated".

Press desired option key

Options in Promo:

Numpad 3: Mega Food

Options:

Numpad 1: Mega Credits

Numpad 2: Mega Research Points

Numpad 3: Mega Food

Numpad 4: Mega Command Points

Notes:

Numpad 1: Mega Credits - toggle on for massive money

Numpad 2: Mega Research Points - toggle on for massive research.

Numpad 3: Mega Food - toggle on for massive food.

Numpad 4: Mega Command Points - toggle on for massive command points.