It's a PC game, but I've just picked up Half-Life Generations GOTY edition (so includes Opposing Force, Blue Shift and Counter Strike) from Cash Converters for 99p
I've just checked the key and it hadn't been registered on Steam, which was nice 
I've just checked the key and it hadn't been registered on Steam, which was nice 
.
The audio emulation is terrible!
. Come on postman! I want to play Space Harrier 32x already dammit!