Run the restaurant. Customers walk in, sit, and a ticket pops above their table. Waiters take the order, the chef cooks, the waiter brings the plate, and the guests pay.
Tap a ticket to take that order yourself. Tap a dirty table to clear it yourself.
Staff: hire more waiters and chefs. Upgrade Speed (they move and cook faster) and Capacity (more plates on the tray at once). Under Front of house you can hire one Bartender (sells drinks with meals), one Manager (the whole team works faster) and one Security guard (guests wait longer before leaving). Each has two upgrades and a daily salary.
Land: open Land (or the Land tab in Design Mode) to buy the plot next door. Bigger plots cost more, and your walls, floor and kitchen grow to fill the land you own. The Second Floor tile there buys an upper storey: stairs go in, and the Upstairs button (or U) switches floors so you can place tables and decor up there the same way. Waiters climb the stairs to serve it.
Design Mode: buy tables, kitchen gear and decor, then click or tap the floor to place. R or the turn button rotates. Tap a placed item to move or sell it. More seats and nicer decor bring more customers.
Promote: the Promote button pays for a promotion. Posters go up in and around the restaurant and about twice as many customers arrive for two minutes. The button counts down while it runs and tells you when it ends.
Stats: tap Stats in the menu, or the money counter, to see today's customers, the money made, what was spent and the staff salaries. Staff are paid at the end of each day, and the numbers start fresh every morning at 9:00 AM.
Clock: the clock at the top shows the time of day in your restaurant. A full day takes about 12 minutes, and the sky turns from morning to evening to night.
Menu: 20 Italian dishes. Each level unlocks new ones; add them to your menu in Menu to earn more per guest.
Pause: the pause button at the top (or P / Space on a keyboard) freezes the restaurant until you resume.
Camera: drag to turn around the restaurant, scroll or pinch to zoom.