Methodology
This page is the citeable description of what Free Games Calendar records. It does not estimate traffic, prices, or store schedules.
What does this calendar list?
Official, time-limited PC offers from Epic, Prime Gaming (claims on Amazon Luna), Steam, and GOG. Each offer is one of three types: free to keep, free weekend, or subscription. The type is always written out. Colour is extra, not the only signal.
What is left out?
Loot, beta keys, and demos that are not the full game. Browser games and piracy. Console stores, Game Pass, and PlayStation Plus are later work, not this version. The Luna cloud-streaming catalog is not mixed with Prime claims. CheapShark and IsThereAnyDeal are not sources. GamerPower is not a source.
Where do claim links come from?
The claim link is the official store page for that offer. It is never a reseller, a key shop, or keyfinder.gg. keyfinder.gg appears only after an offer has ended, in a separate partner link.
How are deadlines recorded?
Times are stored in UTC. If the store gives an exact end, the page and the feed use that instant. If the store gives a date and no clock time, the page shows the date and says the time was not listed; the feed uses an all-day event for that date. If the store lists no end, the page says “Time not listed by the store” and the feed omits the event. 23:59 is never invented.
What is a week on this site?
A week runs Thursday to Wednesday, matching the usual Epic drop rhythm. The URL is /week/YYYY-MM-DD/ with that Thursday’s date. A page lists every offer whose window overlaps those seven days. An offer that starts on one Thursday and ends on the next appears on both week pages. The weekday is a single setting in the code, currently Thursday.
What does “last checked” mean?
Each offer stores the time it was checked and the source page. Later checks are appended and do not erase earlier ones. If nothing has been checked, the page says no offer check is recorded yet. The production catalog ships empty until those checks exist.
How are list prices handled?
A list price is shown only with an amount, a currency, and a source. A week total is the sum of those listed prices in one currency. It is not a valuation, and it is omitted when the sources disagree on currency or when no price was listed.