Portal Guardian
A strategy game built in three months with Cursor on a custom JavaScript engine.
Links go to the official store or developer page. Last verified Nov 3, 2026.
Where to play
Every platform this game is on. Links are checked against official sources; we never host or mirror games.
- View demo on SteamSteamDemo · Demo available (Steam demos are free); full game coming soon, price not announcedFree
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Desktop · Steam
About Portal Guardian
A strategy game in which you protect the secret gateways to a realm. The developer wrote on Cursor's community forum that they built it for Steam in three months with Cursor, on a custom JavaScript canvas engine running at 60 fps in Chrome. The Steam page's AI disclosure says some images are AI-generated and some code is written with the help of AI. A demo is available on Steam; the full game is listed as coming soon, with no price announced.
Screenshots and art
Portal Guardian key art · Steam store artwork
How it was built
Partially verifiedThe developer says the game was built in three months with Cursor; models are not named.
- DeveloperSteam AI disclosure: "some code is written with the help of ai" and some images are AI-generated (tool not named). — Steam
Developed in Cursor on a custom engine written in JavaScript on canvas; team size not disclosed.
- Engine / framework
- Custom JavaScript canvas engine
- Languages
- JavaScript
- Team size
- Not disclosed
- Development time
- 3 monthsDeveloper ReportedCursor Community Forum (Scarlet_Moon_Games)
- Development cost
- Not disclosed
- AI-written code
- Not disclosed
Verification notes: Cursor is named in the developer's forum post, which links to this Steam page. The forum account name differs from the developer name on Steam; not yet confirmed as the same studio. Three months recorded as about 13 weeks.
Game performance
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Steam
Not publicly available: Concurrent players, Steam reviews, Positive Steam reviews, Estimated owners, Gross revenue.
Sales & revenue (all platforms)
Reviews & rankings
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Sources
| Source | Type | Published | Accessed |
|---|---|---|---|
| I built a Steam game in 3 months with Cursor Cursor Community Forum (Scarlet_Moon_Games) | Social post | Feb 9, 2026 | Nov 3, 2026 |
| Portal Guardian on Steam Steam | Store page | Not confirmed | Nov 3, 2026 |
- Developer name
- The Cursor forum post is by "Scarlet Moon Games"; Steam lists the developer and publisher as "Sassy Cat Games". (Cursor Community Forum (Scarlet_Moon_Games), Steam)
