What are the features and language objectives (general problems to solves) or paradigms that a fictive programming language targetted at games (any kind of game) would require?

For example, obviously we would have at least Performance (in speed and memory) (because a lot of games simply require that), but it have a price in the languages we currently use. Expressivity might be a common feature that is required for all languages.

I guess some concepts from not-usually-used-for-games paradigms, like actor-based languages, or language-based message passing, might be useful too. So I ask you what would be ideal for games.

(maybe one day someone will take those answers and build a language over it? :D )

Please set 1 feature/objective/paradigm per answer.

Note: maybe that question don't make sense to you. In this case please explain why in an answer. It's a good thing to have answers to this question that might pop in your head sometimes.