What language is Ikariam coded in

Ikariam is coded in (most likely) PHP. The website was coded in HTML. Some javascript may have also been used. Before trying to make a large scale project like Ikariam, make smaller ones and learn the languages very well. Ikariam was most likely made by a team of coders with a moderate budget.

For tutorials on PHP, HTML, and Javascript - www.w3schools.com