How to play

Snap Sub is a short dive. Steer the sub, clear the mines, and see how deep you can go.

Play in the browser

Start a dive

• Open snapsub.obriengames.com on a phone or computer.
• On a phone, keep the screen upright.
• Tap Dive, or press Enter on a keyboard. You do not need an account.

Steer

• Tap, click, or hold Space / Up to climb.
• A light tap is a light lift. Hold for a hard climb.
• Let go and the sub sinks. Thread the gap between the mines.
• Press Esc to leave a run or the game-over screen and return to the main menu.

Keyboard (browser)

On a computer, these keys work in the browser game. They do not replace tap or click on a phone.

• Enter — start a dive from the title or game-over screen. During a run, fire a rocket if you have one.
• Esc — return to the main menu. If Rankings, Join, Settings, or a similar panel is open, Esc closes that first.
• Space or Up — climb. Hold for a hard climb.
• F or Right Arrow — fire a rocket (same as Enter during a run).
• G — raise the defense field when you have a charge.

Enter still types in Join, Link, and Rankings fields. It only starts a dive or fires when you are not typing in a box.

Score

• Each mine field you pass is +1.
• Every 10 points the sea gets faster and meaner.
• Pick up hull repair, a field, or rockets when they drift by.
• Fire rockets or raise a field when you have them. A field blast is worth extra points.

Meet the Snap Sub

Your submarine

This is the star of the dive. Tap or hold to raise its bow and climb; release to let it sink.

The sub begins with five hull sections. Repair damage with red vials and protect it with careful steering, rockets, and the defense field.

Pickups

These vials drift through mine gaps. Touch one with the sub to collect it.

Hull repair

The red vial repairs hull damage. Some repair two sections. If your hull is already full, it awards 5 points.

Rocket

The gold vial adds one rocket, up to five. Fire it at mines or depth charges to clear a path and earn points.

Defense field

The green vial appears in deeper levels. Activate it for a short protective field that clears nearby hazards.

HUD and controls

The heads-up display keeps the run information and available actions at the edges of the screen.

Score37 Level4 Best82

Score · Level · Best

Score is the current run. Level rises every 10 points. Best is your highest local score.

×3

Fire

Appears when rockets are available. Tap it to launch one, or press Enter, F, or Right Arrow on a keyboard. The number shows how many rockets remain.

×2

Defense field

Appears from level 10 when a field charge is available. Tap it, or press G, for two seconds of protection that clears nearby hazards.

Hull

Five lights show remaining hull. They shift from green toward red as damage increases. No lights means the run is over.

Engine 18 KN

Engine and speed

The four engine lamps show the speed tier. The needle and KN number show travel speed. Both increase as the levels get harder.

♪⚙

Sound and settings

Use the music-note button to mute or unmute. Open the gear to adjust music and effects volume or manage the rankings account.

Threats

Watch the warning color and silhouette. Later levels introduce faster and more powerful attacks.

Red contact mine and chain

A red warning light means lethal contact. Hitting either the mine or its chain ends the run immediately.

Response: steer through the gap or destroy the mine with a rocket or field.

Green sting mine and chain

A green warning light means a nonlethal sting. Contact removes one hull section and briefly stuns the sub.

Response: regain control quickly and look for a red hull-repair vial.

Incoming torpedo

Enemy torpedoes begin in later levels and travel toward the sub from the right. A hit removes one hull section.

Response: climb or dive away; an active field destroys the torpedo.

Depth-charge colors

The color shows maximum point-blank damage: green 1, yellow 2, orange 3, and red 4 hull sections. Damage falls with distance from the blast.

Response: keep clear of the blast, shoot the charge from a distance, or use a field.

Cave roof and floor

The cave closes around the route as the dive speeds up. Striking the rock ends the run immediately.

Response: use short taps and watch the full passage, not only the next mine.

Stay afloat

• Red mines, red chains, and cave walls end a run on contact.
• Green stings, torpedoes, and depth-charge blasts damage hull. Strong blasts can remove several sections.
• Your best score stays on this machine. Join the board if you want it shared.

Rewards Club

• Players 18 or older who join the board can earn shared OBrien Games credits.
• Every 100 times the sub is lost, that player earns 10 Rewards Club credits.
• Those credits sit in one Rewards Club balance and can be used in participating OBrien Games.
• Guests and players under 18 can still dive and join rankings. They do not receive Rewards Club credits.
• Credits are for entertainment only and have no cash value.

Rules

• Play is free. Ads keep the lights on. Dive is never locked behind an ad or a sign-up.
• You must be 13 or older to join Online Rankings.
• Rewards Club credits are for signed-in players 18 or older only.
• Joining is optional. Skip it and the game still plays the same.
• Rank is your best submitted score. One name, one best.
• Top 25 on the board play ads-off (gold badge). New board names also get a short ads-off stretch.
• Play fair. Automated or modified clients can be pulled from the board.
• Unlink a machine anytime. Local play and your best stay. You can also remove your online data from the same screen.