Doomsday Clock
Doomsday Clock is a thrilling and fast-paced HTML5 arcade game where every second matters! The world is on the edge of disaster, and only you can stop the clock from reaching zero. Tap, react, and make smart moves to delay the countdown and save the planet from doomsday. As the clock ticks closer to midnight, the challenges become harder and faster. Collect power-ups, avoid dangerous obstacles, and keep the clock under control to survive as long as possible. The longer you last, the higher your score — and the closer you get to becoming the ultimate time-saving hero!
How to Play
- Tap or click 'Play' to start Doomsday Clock.
- React quickly to prevent the clock from reaching zero.
- Collect power-ups to slow down the countdown timer and boost your score.
- Avoid dangerous obstacles that accelerate the clock.
- Survive as long as possible to achieve the highest score and become the ultimate time-saving hero!
Rating
Plays
Difficulty
MediumAge Rating
EveryoneControls
Desktop
Use mouse clicks or keyboard keys to react, dodge obstacles, and collect power-ups in Doomsday Clock.
Mobile / Tablet
Tap the screen to react, avoid obstacles, and grab power-ups. Simple one-touch controls optimized for mobile play.
Fullscreen Mode
Click the fullscreen button below the game or press F11 (on desktop) for the best experience. On iOS, use "Add to Home Screen" for fullscreen play.
Features
Tips & Tricks
- 1Stay focused on the clock at all times — timing and quick reactions are everything in Doomsday Clock
- 2Prioritize collecting power-ups early to slow the countdown and build a score buffer
- 3Learn and memorize obstacle patterns to dodge them more efficiently as speed increases
- 4Stay calm when the pace accelerates — panicking leads to mistakes, so keep your composure
- 5Practice regularly to train your reflexes — each session helps you react faster and last longer
Pro Tip
Practice makes perfect! The more you play, the better you'll understand the game mechanics and improve your scores.
Frequently Asked Questions
Tap or click to react quickly and prevent the doomsday clock from reaching zero. Collect power-ups scattered throughout the game to slow down the countdown timer, dodge obstacles that speed it up, and survive as long as possible to earn the highest score!
Yes! Doomsday Clock is 100% free to play in your browser on html5games.io. No downloads, no installations, and no sign-ups required — just open the page and start playing instantly.
Absolutely! Doomsday Clock is built with HTML5 and fully optimized for mobile devices. It works seamlessly on smartphones and tablets with simple tap controls for the same thrilling experience.
Power-ups in Doomsday Clock help you slow down the countdown timer and boost your score multiplier. Collect them during gameplay to extend your survival time and reach higher scores. They appear at random intervals so stay alert!
As the clock ticks closer to midnight in Doomsday Clock, challenges ramp up — obstacles appear more frequently, the countdown accelerates, and power-ups become rarer. This progressive difficulty system keeps every session exciting and tests your reflexes to the limit.
Focus on collecting power-ups early to build momentum, learn obstacle patterns to dodge them efficiently, stay calm as speed increases, and prioritize survival over risky moves. Practice regularly to sharpen your reflexes and improve your personal best score!
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