The games are all in the Games category (click the hash tag link 
). They’re all ‘opt-in’ so you only get the ones you interact with appearing in your Latest feed. But they’re all there waiting for you.
Links you can just copy from the address bar and paste into your message. They don’t look pretty that way, but they work just as well. You can make them look prettier by using the 
icon in your format bar (link in top box, display text in bottom).
If you want a practice you can have a little play in The Sandbox. 