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.
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 Download Android APK App Store · Coming soon Google Play · Coming soon
Start a dive
- Open snapsub.obriengames.com and tap Play.
- 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
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 your score at the top and your instruments together at the bottom. Shield sits to the left of the instruments; Fire sits to the right.
Score37
Level4
Best82
Score · Level · Best
Score is the current run. Level shows the dive's difficulty progression. Best is your saved best score.
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.
Shield (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. It stays visible and glows while the field is active.
Hull
Five flat segments show remaining hull: mint at four or five, amber at two or three, and coral-red at one. Dark segments are lost hull. No segments left means the run is over.
Engine and speed
The four rising engine bars show the speed tier. The centered number shows travel speed in knots, with a small KN inside the bottom of the dial. The cyan arc rises with speed as the dive gets harder.
Sound and settings
Use the music-note button to mute or unmute music and effects. Open the gear to adjust their volumes separately 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.
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.
- 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, technology abuse, or a name that is obscene, profane, or meant to harass can be blocked or 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.