I like Valve games a lot.
My favorite one is Portal 2. Portal is good, but kind of short, so I like Portal 2 better. I'm currently going through the Half-Life series. I'm not very good, though so I die a lot and walk around in circles because I get lost and it takes a long time.
Valve is known for not keeping schedule
. (The games are worth the wait, though.) Also, none of their games have ever reached the third installment, which is weird.
They've also made other games. This page is a good place to start:
"Most magic is a trick, an illusion. But [when The Beatles played the Ed Sullivan Show], this was real. Man oh man, was it real." -- Tom Petty | The Petty Archives