The game makes you think you can play it by giving you a taste of content up to fighting a boss. However once you beat that boss the game presents you with a choice. You can either run the same dungeon again, and again, or you can submit to the 6.99 USD pay wall to build a bridge to the other islands. This is the worst type of business model. I'd have been happy to pay for the game up front because I'm a big fan of rogue like games, but it's scummy to throw a paywall in the middle of a game.