1. The gametype i did when i was starting up the game was juggernaut, but the announcer said it was oddball (this may be normal, i dont know)
2. After a game of juggernaut, i clicked "new game" and went to the screen you are supposed to, and then swapped CTF and classic stalker in the folder, and clicked CTF like ur supposed to.
3. The new game started up, and the announcer said oddball again (isnt stalker a slayer variant?), but there was no target, even after a lot of killing had been done. I soon realized that the person who was "it" was invisible like in stalker, but, the game ended when some got 10 kills as "it!"

This may be how stalker is played, but to me it seemed as if i had somehow combined the two gametypes! Any idea folks?
P.S. I tried to take out as much of gametype info as possible, but if you need me to edit anything, shoot me a PM or post about it