Expensive

It has been suggested that this article or section be merged into showbudget. (Discuss)

In game design, an expensive entity/effect/function/whatever is one that takes an unusually long time to process at run-time.

Care must be taken when implementing expensive concepts, and if possible they should be avoided or optimised. On the other hand however, if you have an area that is otherwise very cheap to draw you have leftover budget to add something expensive!