An incentive apparatus for a gambling game system aims to increase the odds thereof. The gambling game system includes a betting table and a plurality of game results. The betting table has payout odds marked thereon corresponding to different game results of the gambling game system. The incentive apparatus includes a dynamic raised odds calculation element, an electronic display board and a payout element. The dynamic raised odds calculation element randomly selects a specific number of the game results and generates dynamic raised odds for the selected game results respectively. The electronic display board has a plurality of display zones corresponding to the game results. The display zones immediately display the dynamic raised odds after betting of each round of game stops. The payout element pays out to players who win the round of the game according to the payout odds or the dynamic raised odds.