Browser only, on purpose
Play the daily investing game online
You play at erstwhile.io. There is no official download, no official phone app, and no offline copy. The Steam page that shares the name is a coming-soon roguelike, not this puzzle.
| Field | Reading | Status |
|---|---|---|
| Where | erstwhile.io, in a desktop or phone browser | 3 sources |
| Price | The daily puzzle is free. No account required. | 2 sources |
| App stores | No official app is listed on the public site or its sitemap. | Official site + Alldle |
| Offline | It is a live website. | 2 sources |
| Phone | Add the site to your home screen from the browser. That is a bookmark, not an app. | Apple’s own guide · 1 source |
| Steam | A different game by Regular Software, marked coming soon. | Steam · 1 source |
What you need
A current browser and a connection that can reach erstwhile.io. Alldle notes that “unblocked” depends on the network: if a filter stops that address, the puzzle will not load. An account is optional. Google sign-in is there if you want results to follow you to another device.
On an iPhone, Safari can put a website on the Home Screen. Apple’s support guide documents that gesture. The icon is still the website. It does not add a store listing, a controller, or an offline mode.
What a search result might be instead
“Erstwhile game download” and “erstwhile android” read like a client exists. The public site, the five-page sitemap, Alldle, and Rangsk’s video all show a page in a browser. I phrase the absence as “no official app,” because I cannot swear some unrelated file is not floating around under the same word.
If the embedded puzzle on this site’s home page is blank, open erstwhile.io itself. Sign-in inside a frame is the first thing a browser will restrict. The game’s support address is [email protected].
Questions
Is it free on mobile?
Yes. The same free daily puzzle loads in a phone browser. There is no separate mobile price.
Can I play the Steam version of this puzzle?
The Steam listing is a different work. It does not contain this daily puzzle.
Keep reading
Sources
- Erstwhile public game page — checked 2026-11-11
- Erstwhile FAQ — checked 2026-11-11
- Erstwhile sitemap — checked 2026-11-11
- Alldle listing — checked 2026-11-11
- Steam store, Erstwhile — checked 2026-11-11
- Rangsk, Indie Spotlight video — checked 2026-11-11
- Apple, Add to Home Screen — checked 2026-11-11