Underboom

Underboom: an underground demolition duel

Dig through the rock, plant the charge, get clear. The last miner standing wins the round. Between rounds there is a shop, and the money for it comes out of the ground.

Windows · macOS · Android LAN and internet play 13 languages Version 1.1

The mobile version: touch controls, the same match as on desktop.

What the game is

Underboom is a top-down 2D game: a grid of soil and rock, a pickaxe, rivals, and more than forty kinds of explosives and gear. A round lasts until only one miner is left alive. Treasure dug out of the rock becomes coins, and coins become bombs, mines, rockets, a flamethrower and armour for the next round. Fight bots, friends at one keyboard, over your local network or across the internet.

⛏️Dig and blast

Rock of varying hardness, treasure, medkits, caves and teleports. Bombs tear open the ground — a path for you or a trap for your rival.

🧨A shop between rounds

Small and heavy bombs, dynamite, mines and tripwires, rockets, a mole, cluster bombs, barrels of fire and acid, napalm, a flamethrower, cryo charges, armour and better pickaxes.

🔥Emergent situations

A burning barrel spills fire through every cavity, stockpiles chain-detonate, gas and ice spread, darkness hides the map — every round plays out differently.

🤖Bots on four levels

From rookie to veteran: they shop, dig for treasure, hunt and dodge. Good sparring while your friends are offline.

🗺️Map editor

Your own maps with start points, treasure and items. Generated and hand-drawn maps play online exactly like the built-in ones.

📱Phone and gamepad

On Android: touch controls and the same online world. On desktop: keyboard, gamepads, and two players at one keyboard.

Download

The game is free. No installer: unpack the archive and run it. The desktop builds check these servers for updates on their own.

macOS refuses to open the downloaded app (“Apple could not verify…”): the game has no paid Apple signature. Two ways around it:
  1. Open Terminal (Launchpad → Other → Terminal), paste the command and press Enter. It downloads the game, puts it into your user's Applications folder and launches it; updates install from inside the game after that.
    curl -fsSL https://underboom.com/dl/install-macos.sh | sh
  2. Or after downloading the archive: dismiss the warning with “Done”, open System Settings → Privacy & Security, scroll down and click “Open Anyway” next to Underboom.
Windows: the browser blocks the archive or SmartScreen refuses to run it — the build has no paid signature and a new file has no reputation yet. Two ways:
  1. Press Win+R, type powershell, Enter; paste the command into the window and press Enter. It downloads the game, puts it into your user folder, creates a desktop shortcut and launches it.
    irm https://underboom.com/dl/install-windows.ps1 | iex
  2. Or choose “Keep anyway” in the browser's download panel, unpack the archive, and when SmartScreen appears click “More info” → “Run anyway”.
The game needs no administrator rights and installs nothing into the system; you can check the archive on virustotal.com.

Play together over the network

Over the internet

  • Two official room servers — underboom.com (New York) and underboom.ru (Moscow). The game shows the ping to each and picks the nearest.
  • Permanent rooms are always open: walk in and play with whoever is there, up to eight players.
  • Your own rooms with your own map and rules, password-protected if you like. The room owner adds bots and starts the match.
  • Two modes. Tournament: rounds until the strongest by wins. Battle: no lobby and no rounds, join any time; die, shop and go back in; the strongest is whoever scores the most kills in one life. While fewer than two people are in, a bot keeps you company, and dug-out cells grow back over time. Every server has a “Battle” room, and you can create your own in either mode.
  • No registration, no account: a name and a miner colour are all you need.

Over a local network

  • At home or at the office one player hosts, the others find the game in a list — the game scans the subnet by itself.
  • You can also type the host address by hand. Android phones join the same game.
  • At one keyboard — two players: arrow keys and WASD, plus gamepads.
  • The game core is identical on every platform, so Windows, macOS and Android all play together.

Frequently asked questions

Is Underboom free?

Yes. No ads, no registration, no purchases. Download the archive for Windows or macOS or the APK for Android and play.

How do I play online with friends?

The Network play menu: rooms on the underboom.com and underboom.ru servers and hosts on your local network on one screen. Pick a room or create your own; on a local network one player hosts, the others find the game in the list or type the host address.

System requirements?

Windows 10 or newer (64-bit), macOS 11 or newer (Apple Silicon and Intel), Android 7.0 or newer. About 10 MB, no installer.

How do I install it on Android?

Download underboom-android.apk, open it and allow installs from this source. Updates install the same way; settings and maps are kept.

Can two people play on one computer?

Yes: two players at one keyboard (arrow keys and WASD) or gamepads. Bots can be added to any game.

How many players in a room?

Up to eight people in one room, plus bots on four skill levels. A room can be locked with a password.

Player reviews

Loading reviews…

Leave a review

Your review appears on the site right away.

How it works

Reviews are published on both sites of the game, in Russian and in English. The author receives a copy of every review and can remove spam. If you want to say something privately, use the form below.

Write to the author

Private message

Goes to the author's mailbox and never appears on the site.

Where messages go

Every message from this form is forwarded automatically to the author's e-mail. Leave a contact and the author can reply. Found a bug? Say which version, which platform and what you were doing — it makes it much easier to reproduce.