Which games have a co-op mode

[Old Wino]

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[Old Wino]

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[Old Wino]

Unreal and it might be an old game but the coop mode of being able to play as a group through the single player game works well

I love that game - will look into that, I've got it somewhere. The only problem is, I always have to give-up at the part where you are in a castle surrounded by lava (maybe it's the sunspire part you mentioned) - Anyway there are loads of small lifts and I always get lost, eventually run out of flares and end up in complete darkness and have to abandon the game. Maybe with 2 it'll be easier..