Explanation:
Jagex has to test every possible combination of Java Versions, Computer Versions, computer brands, types and brands of hardware (mouse, monitor, computer, graphics and audio cards, keyboards, harddrive, etc), and much more for me to list. And in all those different combinations, they also have to test in every combination of possible actions whilst wearing every possible combination of clothing with every possible combinations of areas you could be stepping in every possible direction.
The game may be complete, but imagine all that testing, in every different combinations of graphic, control and audio options.
Now they will have to test in game messaging between other games (RS, FunOrb Games) with similar tests of Versions, Computer Versions, computer brands, types and brands of hardware (mouse, monitor, computer, graphics and audio cards, keyboards, harddrive, etc), and much more.
