Retro Tower Defense event
Retro Tower Defense Weekly Challenge Update: Start Time & Countdown

Weekly Challenge Update is a standing weekly event in Retro Tower Defense, Plaything Games’ wave-survival tower defense hit that keeps about 8,800 defenders battling across its servers at any given moment and has drawn about 160,000,000 visits to date. Each week the game sets a fresh challenge, and clearing it rewards a brand-new skin available only for that round.
The challenge is a weekly reward per Plaything Games’ own listing, so there is always a new cosmetic to chase and always a next one on the horizon. The upcoming start time and the usual weekly window sit on the card just below.

Retro Tower Defense
Weekly Challenge Update
Sep 4, 1:00 PM ET
Next in 11m
- Fridays, 1:00 PM ET
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When the Weekly Challenge Update runs each week
The Weekly Challenge Update is a weekly reward per Plaything Games’ listing, and it’s currently landing Fridays at 1:00 PM ET. Retro Tower Defense pulls players from every corner of the world, so that single Friday slot falls at very different local hours depending on where you play. Here is how the start time translates across the major regions:
| Region | Weekly start time |
|---|---|
| US Pacific | Friday, 10:00 AM PT |
| US Eastern | Friday, 1:00 PM ET |
| United Kingdom | Friday, 6:00 PM BST |
| Central Europe | Friday, 7:00 PM CEST |
| India | Friday, 10:30 PM IST |
| Japan | Saturday, 2:00 AM JST |
| Australia (Eastern) | Saturday, 3:00 AM AEST |
The next run is scheduled for Friday, September 4 at 1 PM ET. So far it has landed on Fridays at this time — we’ll update this page if that changes.
What you earn in the Weekly Challenge Update
The draw here is cosmetic, and it changes every week. Complete the week’s challenge and you walk away with a new skin tied to that round; miss it, and the next one is a week away.
- A new, challenge-exclusive skin every week
- A fresh objective to clear each round, giving regular players a reason to return
- A rotating reward, so the skin you earn one week differs from the last
Tips for catching it
- Friday at 1:00 PM ET is the anchor. Use the conversions above and set a reminder for your own hour, especially if the slot lands overnight for you in Japan or Australia.
- If you miss this one, keep an eye on the schedule card above for the next challenge and skin.
- Have your towers and currency sorted before the window opens so you can focus on the challenge itself.
How it fits Retro Tower Defense’s schedule
The Weekly Challenge Update is the steady, predictable beat in a game that also runs bigger limited-time crossovers, including the Forsaken collaboration currently live in Retro Tower Defense alongside it. Where those crossovers come and go, the weekly challenge is the fixture you can count on every Friday, which is a big part of why the game has been favorited about 160,000 times.
Frequently asked questions
What time is the Retro Tower Defense Weekly Challenge Update in my timezone?
It starts every Friday at 1:00 PM ET, which is 10:00 AM PT, 6:00 PM in the UK, 7:00 PM in central Europe, 10:30 PM in India, 2:00 AM Saturday in Japan, and 3:00 AM Saturday in eastern Australia.
How often is the Retro Tower Defense Weekly Challenge Update?
It’s a weekly reward per the developer’s listing, and it has so far landed on Fridays at 1:00 PM ET.
When is the next Retro Tower Defense Weekly Challenge Update?
The next run is set for Friday, September 4 at 1 PM ET.
What do you do in the Retro Tower Defense Weekly Challenge Update?
You complete that week’s in-game challenge, and finishing it rewards a new skin available only during that round.
We update this page as the schedule changes. Last updated September 4.