Comment Re:I have a shorter Tetris implementation (Score 1) 215
We're taking Wikipedia as the only definition of what a game is now?
I guess my response ought to be that dictionary.reference.com defines a game as "1. an amusement or pastime", and that therefore your definition is invalid.
I could list games that lack some or all of those elements, and you'd probably just define them as non-games, so what's the point? I disagree with the definition of loss avoidance as a victory condition as well - because you never reach a state where you have attained the victory condition. The one feature that I'd personally say is [b]absolutely[/b] mandatory for a game from your list of four elements is interaction. But then, since we've decided that Wikipedia is the arbiter of all things game-related, I'd have to see the entry on zero-player games and query whether, for example, Progress Quest can be counted as a game. Probably also rules, although there are plenty of games where the rules are emergent from a very small initial set (Nomic and its derivatives, which [b]also[/b] typically start with no goals, and may continue without them pretty much through to the end in some cases).
You've certainly moved the goalposts, of course. Victory conditions are not the only type of goals, and score systems are not the only type of challenge. As a result you're not even actually disagreeing with my original point - you don't need victory conditions or score systems even to fulfill your definition of a game as including goals, rules, challenge and interaction.