Mayfly is an eerie story-based quiet horror set aboard a narrowboat in Northern England. Upon waking alone to find your husband is missing you find yourself weaving through a shifting, unstable reality as you search your confined surroundings in this focussed narrative exploration game.
Questions
Is it really free?
Yes. Mayfly: Demo is free right now on Steam, with nothing to pay.
Is this the full game?
No. A demo is a portion of Mayfly: Demo — usually the opening section — published so you can try it. It is free permanently, but it is not the complete game.
Where do I claim it?
On the official Steam page. We link straight there — we never host game files or act as a middleman.
More on Steam
4| Time left | Cover | Title | Type | Store | Was | Action |
|---|---|---|---|---|---|---|
| Ends 31 December 2026 at 23:59 UTC |
|
DAVE THE DIVER - Godzilla Content Pack | DLC | Steam | — | Claim DAVE THE DIVER - Godzilla Content Pack on Steam, opens a new tab |
| No deadline |
|
Explosive Odds - Supporter Pack | DLC | Steam | — | Claim Explosive Odds - Supporter Pack on Steam, opens a new tab |
| No deadline | Plague Lords: Witch Hunt | Free | Steam | — | Claim Plague Lords: Witch Hunt on Steam, opens a new tab | |
| No deadline | Before Your Eyes | Free | Steam | — | Claim Before Your Eyes on Steam, opens a new tab |