The likely answer is yes, but you'll have to test and work harder to prove the revenue. AdSense is just place it and go, and you get paid, yet AdSense earnings in many markets are not that lucrative, but they are easy.

Affiliate programs are not as easy as AdSense in some ways, because what you are looking for is a buying behavior that your audience has - the type of products they will get - and a way to introduce them, via targeting, to people who are willing to buy.

Some sites just do not have a buying behavior, and because you are in gaming, people come there and stay because they are interested. As others have shared, walk carefully because you could start promoting and causing a negative effect if you have the wrong products and the wrong targeting.

Affiliate programs can work, yet they do take work, more than AdSense, which is why once you find the right products your users love, it can make more than AdSense, but will take some time to figure out what is converting for your specific audience.

Also, if you have Google Analytics set up with newer tracking, you should find Interests and in market segments, which can show you what your users are looking at before they go to your site, and can lead to some product selections based on behaviors, not guesses.