No big drama but solid oppositions with a friend about :
- The morality of games involving mass geopolitical manipulations (for some reason my friend saw it as more shocking than, say, pirate games, historical war games, first-person mayhems, etc).
- The morality of using the Chernobyl catastrophy as a background for the Stalker videogames (I think I was the one having reservations about how taseful it was, while he considered it simply similar to hiroshima-inspired Godzilla movies... typing it, I realise that I tend to see it like that too nowadays, either because my perspective shifted or because Chernobyl feels more distant).
- Re-writing star wars canon stories in videogames. Okay, less a difference than an opposition here (we didn't exchange arguments on it), but he never wanted to play a star wars game set in the same period as the original trilogy, and which could change their events (Star Wars Rebellion, etc).
- Non-profitable moral behaviour roleplayed in RPGs. For instance, giving away gold pieces to beggars without any profit for the character or game progression would feel natural and in-character to me, while he'd apply player pragmatism there (not roleplaying 'good' if it doesn't contribute to in-game win conditions). My "generosity" in our coop NWN sessions was amusingly pissing him off.
- Out-of-character bunny hopping. I cannot play NOLF (even multiplayer) and jump around like a Quake alien, it breaks the feel of the game to me. One of our friends kept doing it. We were doing other silly things, that weren't maximising efficiency, but which silliness did "fit" the spy spoof universe itself.