Starboard Dice, the roll over / under dice game
Admiral Mojo, a monkey in a gold-trimmed bicorne, throws one golden die along a rail marked 0 to 100. You decide where the line goes and which side wins.
Updated 13 October 2026
In-depth review: Starboard Dice strategy: where to put the line
The game in one paragraph
Starboard Dice is a dice game in the Nocturn Originals range by Nocturn Play. A single golden die is thrown onto a rail and stops on a number between 0.00 and 100.00. Before the throw you place a line on that rail and choose Roll over or Roll under. If the die lands on your side, you win your bet times the multiplier shown. Move the line and the multiplier moves with it: a wide winning side pays a little, a narrow one pays a lot, up to more than 40 times the bet at the tightest setting.
Admiral Mojo and the rail
The mascot is Admiral Mojo, a cheeky monkey in a navy coat with gold epaulettes and a bicorne hat with a star. He stands by a ship's mast and throws the die himself: he shakes it, pitches it, and it tumbles along the rail before stopping exactly on the rolled number, the die acting as the cursor. Win several rounds in a row and the sail on his mast climbs a little higher each time. The rest of the screen is clean and dark, built for quick reading: the big result number, the red and green rail, and three boxes for the multiplier, the line and the win chance.
Setting your line
Drag the gold handle along the rail, or type the line directly in its box. With Roll over, every number above your line is green and wins; with Roll under, it is every number below. The arrows button flips the side. You can also work backwards: type the multiplier you want, or the win chance, and the line moves to match. The window is limited so that the winning side always covers between 2 and 98 points of the rail, and lines can use two decimals for fine control.
Betting, manual or auto
The bet panel sits on the left. Type the amount, halve it or double it with one tap, and the Profit on win box shows exactly what a winning roll adds. Press Bet and Mojo throws. In the Auto tab you set a number of bets (0 runs until you stop it), what to do after a win and after a loss (go back to the base bet or raise it by a percentage you choose), and optional limits that stop the series on a given profit or loss.
A fair roll you can trace
The number is drawn by the game server with a cryptographic random generator at the moment you bet. The animation only plays back that result, and nothing is decided in your browser. A Fairness panel shows the ID of the last round, which support can trace if you ever have a question.
On a phone
Upright, the admiral and the rail take the top half and the bet panel slides below; in landscape the layout matches the desktop, panel on the left. Rounds are quick, so it works well one-handed.
If you like the Originals format, Pearl Cascade brings the same bet panel to a plinko board, and every other Nocturn title is listed in the catalogue.
Frequently asked questions
How does Starboard Dice work?
You set a line on a rail from 0.00 to 100.00 and choose to roll over or under it. If the golden die stops on your side, you win your bet times the multiplier.
How is the multiplier decided?
By the size of your winning side. The narrower it is, the bigger the multiplier; the wider it is, the smaller.
Is there an autobet mode?
Yes. Auto runs a series of bets, can change the stake after wins or losses, and stops on the profit or loss limit you set.
What is the most a single roll can pay?
With the narrowest winning side allowed, the multiplier goes past 40 times the bet.
