The new American football season is almost upon us and Intertops Casino is celebrating the return to the gridiron with a special bonus giveaway.A total of $150,000 in casino bonuses will be awarded as part of the site's Football Kickoff event. Bonuses of up to $500 will be awarded every week between now and 6 October to the top 300 players on the event scoreboard.Trivia buffs can also get a shot at winning more cash. Players who correctly answer an NFL-related brain teaser will be entered into a special draw. Fifty randomly selected winners will then earn a $50 Trivia Bonus following the draw on 23 September.Another $1000 will be given away via the Extra Point Cash Bonus Draw on 7 October. Any player that makes the Scoreboard during the Football Kickoff event will receive an entry into this one.Players can brush up on their football knowledge and keep tabs on their competition progress by checking the Football Kickoff Scoreboard.Points are earned simply by playing on Intertops Casino's selection of slots and online casino games.