@Xray - Yes, i did, in the description of original scene. Not in THAT key, though.
(if you look, i've updated it, previously it allowed any mods)
@Ultragamer564 - I changed my mind about allowed mod types. Finish your tournament, and stop doing senseless scenes. If you want to make mods, do something unique. Just like @IvanIvanovicPupcin does. Try to make TD yourself(I'm working on it too).
Negative. Imagine a scene with a car where you have to complete the track in shortest time you can. Then people with faster PCs would always win, cause the car will go faster, but the timer will not.