I registered a new domain and would like to build a game portal with Joomla on it. Is somebody available here with experience in those matters that can help me?
You can use premade flash games I run a joomla site dundeenetwork.co.uk and have some flash games from miniclip.com on it
After some time searching I can answer my own question. The easiest way is to install the Mochiads plugin. After about two hours I had a website with more than 300 flash games embedded with descriptions and tags. Every game has its own thumbnail and open in its own page. Great plugin. Just go to the site, download it, create an account and spend some time adding the games. Easy to configure but it takes some time to add the games properly. Try it, you won't regret it.