I think we had a thread like this a few months ago. I've had game related dreams. The weirdest was as follows:
I dreamt I was playing PS3 (actually maybe PS2), GTA specifically, and the eventually my dream completely focused on what was on screen. Someone hit my car so I got out and started shooting him (still in game). He wouldn't go down with the MP5 after like 3 clips of ammo. I then look round and realise that everyone in-game was a zombie and it became more like Resident Evil, but maintained the GTA user interface. I switched to an M16 and legged it because they just weren't dying. Made it to a building and entered a corridor and locked myself in a room with a weird altar thing. At this point I realised I was in a dream (I remembered I was supposedly playing on a console but couldn't find my controller, lol). So I opened the door and legged it out, changed weapons (still GTA style), even though I knew it was a dream my sub-conscious still had them not dying and coming for me... so I decided "feck this!", flew into the sky and blew up the whole city (Dragonball-Z style :P) and selected a new city and entered it before waking up and writing it all down so I could remember the weirdness.