Tap once when the shrinking pink ring meets its target. Tapping before or after that instant makes you take a hit instead of deleting the target. Each successful deletion speeds up the next ring, so scoring well in the 20-second run is about reading each approach, not mashing the button.
Play free and understand the objective
Open the developer's browser game. Created by lillithai, it was published on October 23, 2026 at 15:20 UTC and entered the 20 Second Game Jam 2026. A ring closes toward a target. Your job is to delete targets with precisely timed inputs until the clock stops at 20 seconds.
The official description presents this as a score challenge, not a campaign with a final level. It also confirms a session-best score and a one-line run summary that can be copied from the results screen.
Controls and what the game checks
| Input or event | Meaning |
|---|---|
| Tap on a phone | Make the timing input |
| Mouse click on desktop | Make the same input |
| Space bar | Keyboard alternative |
| Pink ring reaches the target | Successful timing deletes the target |
| Press too early | You take a hit |
| Press too late | You take a hit |
| Successful deletion | The following ring becomes faster |
| Twenty seconds pass | The run ends and you can review the result |
A practical five-step scoring routine
- Start the official game and identify the stationary target and the ring closing around it.
- Let the ring approach. Do not press while there is still a visible gap; aim for the instant it meets the target.
- After a successful deletion, immediately watch the next ring. Its increased speed means the previous wait duration is no longer a reliable cue.
- After a miss, distinguish an early input from a late one. On the next attempt, delay slightly for an early miss or act slightly sooner for a late miss. The developer does not publish an exact hit window.
- At 20 seconds, check your score against the best recorded in that session. Copy the one-line summary if you want a record of the run.
Troubleshooting your timing
| Symptom | What to change |
|---|---|
| You press while the ring is still outside | Wait for the remaining gap to close |
| The ring has already passed the target | Prepare to press while it is approaching |
| You miss after several deletions | Re-read the faster ring instead of repeating a fixed rhythm |
| Rapid tapping causes repeated hits | Aim for one deliberate input per ring |
| You cannot compare runs | Use the session-best display on the end screen |
The speed changes, but the visual goal does not: press when ring and target coincide. There is no evidence that blind tapping is a reliable shortcut.
Frequently asked questions
Can I play on mobile? Yes. The developer explicitly lists tapping, clicking and Space as inputs.
What happens on a bad tap? You take a hit. The public instructions do not specify the health value or the number of hits that end a run.
Is there a final boss or secret ending? The documented endpoint is the 20-second timer and a score result. Do not assume additional stages.
Does my record persist forever? The author calls it a session best. Persistence after closing the browser has not been verified.
Takeaway and sources
Watch the ring, press at contact, then recalibrate as it accelerates. In a game called DELETE WINDOW: 20, the fastest way to lose time is to delete at the wrong moment.
- Official game, timing rules, controls and score features (checked October 25, 2026).
- 20 Second Game Jam 2026, official entries and rules (checked October 25, 2026).
- Full-playthrough performance, exact timing tolerance, damage values and social growth were not independently tested.
