This was achieved by increasing the brightness of the lights over the plants, increasing the rate of photosynthesis. (newscientist.com)
Increasing the brightness on the TV screen can help a little, but if played in handheld mode then it remains a game of hide and seek. (goombastomp.com)
You can always increase the brightness if you need to see something and then turn it back down. (technowize.com)