The House Edge of a particular game depends on the game's Return to Player (RTP), which is how frequently you can possibly win payouts over the long term when you play the game.
For example, for a game with 96% RTP, the House Edge is 100% - 96% = 4%.
The percentages are usually split into 0.5% - 1% ranges: 1.5%, 2%, 2.5% etc. Most of our games display the RTP statistics right below the game.