The over 1.5 goals per game market might also be known as 2 and over. The reason for the addition of the half goal means you're not looking out for the 2 results of equal or over; you're matching 1 result where the goals are over 1.5.

So, when you place an "Over 1.5" bet, you are essentially betting that there will be at least two goals or points scored in the match. If the final score of the game is 2-0, 2-1, 3-0, or any other combination where the total goals or points are two or more, your bet wins.