Next portion of strange questions:
1) Can i release game on another sites, after submit here (before and after jam deadline)?
2) Can i submit more, than one game (cycle, dilogy, prequel/sequel, etc) ?
1. Yep, not a problem.
2. As per the rules:
"Contest participants can be involved in UP TO TWO submissions. This means you could work on a solo project and collaborate with another team, collaborate on two teams, or even submit two solo projects. If a team uses your resources, but you were not directly involved in the development of the game, then it won't count towards the TWO game limit; same with commissions."