The Last Pulse
Ten NORMAL puzzles. Three HARD challenges. One pulse.
PLAY · NORMAL + HARD
The Last Pulse
Build a route that changes the outcome. Choose NORMAL or HARD and keep a different construction in each.
Free to play · No account · Progress saved in this browser
Build. Test. Rethink.
The machine is fictional, and its rules are yours to explore. Place ordinary mirrors, try mirrors that turn after a hit, and guide the same pulse through the required contacts before it reaches STOP. The ten-level NORMAL campaign adds shared passages, moving sentries and stored charges. HARD is available from the start with three more demanding puzzles and its own saved progress. Switch between the campaigns without losing either construction.
There is no building-time pressure. The stopwatch measures only the running test; the optional 60-second run limit starts switched off. Pause, step through an interaction or replay the last attempt to work out what happened.
Your first move
- Inspect the fixed parts to see what they change.
- Drag a mirror from the tray onto the board. Tap or click it to rotate.
- Press RUN. Read the event trail, adjust your route and try again.
Keep two constructions per puzzle with Build A and Build B. NORMAL and HARD keep separate completions and records. Hints are available, and loading a complete example asks before revealing the solution.
A last scene, earned
Complete either campaign with your own constructions to unlock its ending: ten levels for NORMAL, three for HARD. Both play the victory film, followed by a different final image for each campaign. The video and image load only when the ending opens. You can skip, mute or replay it; reduced-motion settings wait for you to press Play.
Play your way
Mouse or touch: drag tools onto the grid, tap to rotate and use the zoom controls for a closer look. The playfield expand button gives the board and tools more room.
Keyboard: Tab between controls. On the board, use 1 / 2 / 3 to select a tool, arrows to move, Enter to place, R to rotate and N to cycle through placed mirrors. Space runs or pauses a test.
Sound starts switched on. Use the speaker control to mute or unmute; your choice is remembered in this browser. Your builds, completed puzzles and settings save in this browser on this device. Clearing site data or using a private session may remove them. RESET ALL inside the game asks for confirmation before clearing its local progress.
Want to explore a real encounter next? Try the Apophis 2029 3D explorer, or return to the evidence archive.