These databases can find all types of articles and multi-modal resources. However, they are best at finding academic research articles. Do you need a scholarly or peer reviewed article? It's a good idea to begin here.
News About Videogame Culture
This RSS feed is sourced from JMIR Serious Games, a multidisciplinary journal that looks at gaming and gamification for education and social change. JMIR (Journal for Medical Internet Research) Publications is an open-source eHealth journal publisher with 30 specialty sister JMIR journals, of which Serious Games is one.
These are examples of multimodal information sources. There are many other types of multimodal information and writing. Please consult with your writing instructor about how to incorporate multimodals into your writing assignment.
The following is a selective list of policy institutes (think tanks) and organizations that focus on technology-related topics. This is not a comprehensive list, but it is a place to start.