Thanks for the suggestions :)
1. Yea will work on it if still can get it in time, the "Main Menu" that i got currently is kinda lazy ass work xD.
2. Well, controlling huh, do you mean during u use the Q? During the "recording" the game time will be slowed like 0.8 scale. then during the "Rewind" it will be 2.0. I tried play my game by myself n gravity doesn't seems to be the issue.