Hi,

Informatics is basically the study computational systems, mainly that involves data related aspects like data storage, retrieval. It includes studies related to  the representation, processing, and communication of information in natural and engineered systems. Now, with this stream it is difficult to opt for technology related undergraduate courses like BCA as they require mathematics as minimum eligibility. However, since you are interested in app development, web and game development, you can opt for courses which are specifically curated for the particular subjects only. After 12th, you can opt for an undergraduate course and in addition do these specific certificate courses. they will provide you with adequate knowledge about the field you are interested in and you can look for a career in these fields.

I hope this helped you. You may ask questions in comment section if any.