In the card-driven board game Rialto, the goal is to earn the most victory points (VPs), which are awarded for a variety of things. The game board displays the six districts of Venice, and players earn VPs for placing council members into these, for building bridges and placing gondolas to connect the districts with one another, and for building advantageous buildings.

The game is played over six rounds,
with each round consisting of three phases:

In phase 1, sets of eight cards are displayed (with six cards face-up and two face-down). Each player takes one set, then reduces his hand to seven cards. A card shows one of six specific characters (Architect, Merchant, etc.) or is a wild card.

Phase 2 consists of six sub-phases in a fixed order, one for each character. In each sub-phase, players choose whether or not to play one or more cards of that specific character. Each card allows them to perfom that character's action, for example, take one piece of gold for each Merchant card you play, take a building with a value equal to or lower than the number of Architect cards played. The higher its value, the better its function.

Whoever plays the most cards in each such sub-phase receives a bonus of one free action of that type. In case of a tie, whoever is farthest along the "Doge" bar gets the bonus – and of course to advance on the Doge bar, players need to play Doge cards.

Finally, in phase 3, players may take advantage of their buildings. For each piece of gold paid, a player may use one of his building's ability.

Players collect VPs both during the game – from special buildings and by building bridges between districts – and at the end of it – for majorities of council members in each district. 

The value of each district evolves during the game: 

Each district is adjacent to four other ones, and at the end of the game, they will be connected either via bridges or gondolas. A bridge increases the value of the adjacent districts by 3-6 victory points, whereas a gondola increases this value by 1 point. The player with the most council members in a district earns VPs equal to the district's total value, the player with the secondmost council members earns half this value, and so on. While it's important to establish majorities in the districts, it's also crucial to control their values by cleverly placing those bridges and gondolas.