Choose Your Pictures
Choose the pictures that are relevant to your industry. For example, if you're a car company, then you can use cars. If your company is in sports, then you can use famous athletes.
Customize the Timer
You can set the guessing timer as quick or slow as you wish.
Give Away Prizes Based on their Results
When you see that some players were very quick to recognize a certain product/image, then you can send them a personalized message, announcing that they will participate in a raffle of that specific product.