OCD things you do in games.

[Xannidel]

I reload REGARDLESS to how many bullets I used up.
I hoard consumable items in RPGs and MMORPGs because I feel I will need them later even if I out grow their uses.
I always save twice before going to a new area.
I always play the good side to a game before the evil side.
I NEVER enjoy playing a human in any RPG/MMORPG setting.
I ALWAYS play the caster class if available in games.
I always like to play games in chronological order.

There are probably more but I can't recall of them yet.