NXT Lab · Free games

Games.

Thirteen games and a set of science simulations that run right in your browser. Nothing to install. Pick one and play.

A knight in a torch-lit dungeon next to a pit, a gem and locked stairsLEARN TO CODEKIDS▶ Play

Dungeon Code

Learn programming from the very first step. Build a program from blocks, press Run and watch the knight follow it through the dungeon, one block at a time. Made for kids from about 8, in English and Slovak.

Learn to codePuzzleEN / SKMouse or touch
A little green dragon in a red firefighter helmet sprays water at a burning house in a colourful toy townFOR KIDS▶ Play

Ember's Fire Brigade

Ember the little dragon wants to be a firefighter. Fly around a toy town and spray water on every fire. But watch out: when Ember gets the hiccups, out comes fire! Look up at the sky in time, or Oops… Made for kids, with an easy mode.

For kidsFlying3DMouse or touch
A red plane on the runway in an alpine valley, snowy peaks aheadA yellow plane flying low down a city boulevard between tower blocks▶ Play

Skyrings

Low-poly arcade flying. Seven missions — alpine valley, canyon, city towers, dragon night, ancient forest, neon tunnels and a carrier deck. Fly the rings, dogfight enemy fighters from Noob to Ace, or bomb a target, in any mix — then land in one piece. Race your ghost and watch the replay.

FlightDogfight3DKeyboard or touch
A grey stealth fighter on afterburner, low over a river in a mountain valley, its HUD locked on a target aheadThe fighter low in the valley as a missile warning flashes on its HUD▶ Play

Afterburner

A supersonic stealth fighter, low and fast up a river valley. Stay below the ridges: climb and the SAM sites lock on. Destroy the radar post with a missile, turn round in the bowl at the valley head and race home with enemy fighters behind you. Flares, chaff, G-force blackouts, flaps, afterburner and fuel, and a real fighter HUD. Rookie, Pilot or Ace.

FlightCombat3DKeyboard or touch
A yellow car stuck behind a broken-down tractor on a country roadA city crossing with traffic lights, trees and a park, seen from above▶ Play

Green Wave

Keep the traffic moving, in 3D. Thirteen levels: tow a broken-down tractor, run crossings when the lights fail, clear fallen trees, get an ambulance to the hospital, help children across, empty a stadium, wait for trains, run roadworks, keep a roundabout flowing, buy smart lights and run a whole city. Then four missions where the lights run themselves and you handle what comes up: give a ten-car motorcade a green wave, tow wrecks in a heat wave, empty the stadium on match day, survive summit day. Every car finds its own way, and queues build when you get it wrong.

Traffic puzzle3DMouse
A squad of soldiers coming up a desert corridor toward the player▶ Play

Role Strike

Five against five, in the style of Counter-Strike. You don't buy guns: you pick one of 20 roles, like Medic, Sniper, Ninja, Tank or Hacker, each with its own blaster and a special ability. Play bomb defusal, team deathmatch, Role Race or 2 v 2 Wingman against bots.

Tactical shooter3D first personMouse & keyboard
Tanks attacking an enemy base at dusk in the desert▶ Play

Dust Lords

Real-time strategy seen from above. Pick one of three Houses, harvest spice and fight two rival Houses at once. Sandworms, sandstorms and night battles, and you can drive any tank yourself.

Strategy2DMouse & keyboard
Hover tank view over the desert with tanks and a harvester▶ Play

Spice Storm

Desert war from the seat of your hover tank. Build a base on the rocks, let your harvesters collect spice, and lead your tanks against the red base. Stay off the sand when the worm comes.

Action strategy3D first personMouse & keyboard
A bomb with a red countdown timer, a Simon Says pad and coloured plugs▶ Play

DEFUSE!

Co-op bomb defusal for friends. One player sees the bomb and the timer; everyone else has the manual and can't see the bomb. Talk each other through wires, buttons, Simon Says, Morse code, a safe lock and more before it goes off. Host a room and share the code, or practise solo.

Party co-op2+ players onlineMouse or touch
A dark rock tunnel lit by a headlamp, with a pickaxeSCARY▶ Play

Deep Dark

An endless cave dive. Climb down through dry rock and swim through black, flooded caves. Watch your air and see how deep you can go before the things down there find you.

ExplorationHorror3D first person
A night guard's office with monitors, doors and lightsSCARY▶ Play

Shadow Shift

You are the night guard at the Grey Pines Hotel, and something lives in the basement. Watch the cameras, shut the doors, save your power and survive until 6 AM.

Survival horror3DFive nights
World map strategy game with Nepal highlighted▶ Play

Capital Clash

Strategy on the real world map. Start as a random country, grow your money and army, make peace or war, and capture every rival capital.

Strategy2D mapMouse
Tower defense board over desert dunes▶ Play

Resonance

Tower defense with sound waves. Place frequency towers whose rings hit everything in reach, and mix frequencies for combo effects. Six levels.

Tower defense2DMouse or touch
Left: a cave crammed with coloured balls. Right: red braking waves travelling backwards through traffic▶ Play

Systems

Simple rules, surprising results. Bounce & spawn: every time two balls collide a new one appears. How long until the cave is full, and why does it explode at the end? Traffic waves: identical drivers on a ring road, each reacting a moment late. Tap the brakes once and watch a jam grow out of nothing. Virus spread: towns of stick figures and a virus you design; try lockdown, quarantine, masks and vaccines. Segregation: everyone only wants a few neighbours like them, yet the town splits apart.

SimulationScienceSound

Best played in Chrome or Edge on a computer. Turn the sound on.