Field manual, agent
Professor Zuldarr was a brilliant professor of robotics until he was fired for building robots for evil. Now his army of robot sea creatures is stealing the world's sunken treasure. The World Archaeological Federation has called in Dr. Diggs. Your job: help him keep every coin.
How a dive works
The treasure sits at the top of the board. Robots come in at the bottom, at the red triangles, and take the shortest open path. Each robot that reaches the treasure steals one piece. There are 20 pieces: lose them all and the dive is over. Survive all 5 waves to win.
Your towers shape the maze. Robots walk around anything you build, so where you place towers decides the path they take. There must always be a way through; the game won't let you block it completely.
- Tap a tower in the bar at the bottom (its price is on the button), then tap a glowing square.
- Tap a tower you've built to Upgrade it (three levels), Sell it (75% back, or Undo for 100% before the wave starts), or change its target: First (closest to the treasure, the default), Strongest (the torpedo's default) or Closest to the tower.
- Robots shoot back and can wreck most towers, but every tower is repaired at the start of each wave.
Your seven towers
| Tower | Coins | What it's good at |
|---|---|---|
| Harpoon | 60 | Cheap, quick single shots. Can hit manta rays. |
| Ink gun | 65 | Slows robots down. Can't hit mantas; eels and squid ignore ink. |
| Coral castle | 15 | Blocks a square so robots walk the long way. Can't be destroyed. Upgrades add a small attack. |
| Cannon | 110 | Splash damage for groups. Can't hit mantas. |
| Bunker | 60 | Tough: robots can't destroy it. It shoots back, too. |
| Stun gun | 95 | Stuns a small area. Stunned robots can't shoot. |
| Torpedo | 130 | Long range. Hunts the toughest robot. |
Zuldarr's robots, and what each one ignores
| Robot | Watch out for |
|---|---|
| Little crab | Weak, but it shoots your towers. A couple of harpoons near the entrance handle a swarm. |
| Medium crab | Slow, with a hard shell. Slow it with ink and keep firing. |
| Big crab | Harpoons bounce off. Bring cannons and torpedoes. |
| Eel | Fast and ignores ink. Stun it or out-damage it. |
| Large shrimp | Tough and slow. Make the path long with coral castles. |
| Small shrimp | Tiny, fast, in swarms. Harpoons and cannons; a torpedo is wasted on these. |
| Squid | Squirts its own ink, so yours does nothing. Cannons work. |
| Manta ray | Flies over castles. Ink and cannons can't aim up; harpoons, stun guns and torpedoes can. |
| Drone sub | Boss of Dive 5. Lots of armor: stun it and pile on everything you have. |
| Prof. Zuldarr | Final boss, Dive 10. He came himself. Save Dig for when he gets close. |
Tap a robot in the Next wave preview at the top to read its tip. A 🛡 means your current towers can't hurt it.
Dig and boost cards
⛏ Dig, Diggs's special move: tap the round DIG button, then tap the path. Diggs pops up and hits every walking robot nearby (he can't reach flying mantas) and stuns them for 2 seconds. The gold ring refills in 30 seconds.
Boost cards: from Dive 3, before waves 2 to 5 you pick one of three cards: a treasure map (+75 coins), sharper harpoons, thicker ink, a bigger cannon blast, longer stuns, faster torpedoes, tougher bunkers, or Diggs's coffee (Dig recharges faster). The wave waits while you choose.
Speed, pausing and calling early
- The first wave comes after 20 seconds, then 15 seconds between waves.
- Ready early? Tap GO +N or ▶ +N to call the wave now and earn bonus coins for the seconds you skipped.
- 2× speeds the action up. II pauses. Your dive is saved, so you can Continue it later.
The ten dives
| # | Dive | New this dive |
|---|---|---|
| 1 | Pirate ship · Caribbean Sea | Harpoon, ink gun |
| 2 | Titanic · North Atlantic | Coral castle |
| 3 | Three-mouth cave · Pacific coast, South America | Cannon · boost cards begin |
| 4 | Reef · Great Barrier Reef | Bunker |
| 5 | Volcano · undersea, Pacific | Stun gun · Boss: the drone sub |
| 6 | Stone army · East China Sea | Torpedo (all seven towers) |
| 7 | Cargo ship · Lake Superior | Manta rays |
| 8 | WWII sub · Arctic Ocean | Three entrances. The toughest dive. |
| 9 | Steamboat · Cape of Good Hope | Three entrances |
| 10 | Greek temple · Aegean Sea | Three entrances · Final boss: Zuldarr |
Stars, challenges, daily dive and endless
- Stars: ★★★ = no treasure lost · ★★ = 5 or fewer lost · ★ = a win. Win a dive to open the next.
- Challenges: each dive has an optional challenge, for example "Win with 4 towers or fewer". You'll see a badge when you beat it.
- Daily dive: unlocked after Dive 2. The same dive for everyone that day; share your result.
- Endless: unlocked after you beat Dive 10. Waves keep coming and get tougher. How far can you get?
Diggs's field tips
Settings
Open Settings on the title screen (or from the pause menu): Music, Sound effects, Vibration, Reduce motion (stops screen shake), and Captions Off / S / M / L.
The iPhone and Android app
Dr. Diggs here at drdiggs.net has no ads. The phone app is free too and pays for itself with ads, shown only between dives, never during play, never after Dives 1 and 2, and at most once every three minutes. Optional bonus ads let you reroll your boost cards once per dive, or get +5 treasure to keep going after a loss. Remove ads · $2.99 is a one-time purchase in Settings; Restore purchase brings it back on a new phone.
Still stuck?
See Support or email support@drdiggs.net.