Does a demo increase sales indie game teams can count on? A demo reliably builds wishlists and streamer reach, but most players who try it will not wishlist. Measure demo-to-wishlist conversion instead of assuming sales will follow.
Picture a puzzle game with a demo live on Steam, a trickle of wishlists and no clear sense of whether the demo helps or hurts. The fix is to read the conversion numbers properly, choose the right ending point and match the format (demo, free weekend or free levels) to the platform. This guide is part of the wider indie puzzle game development series and covers measuring a demo, not building one.
What a demo does for wishlists and sales
A demo is first a wishlist and visibility tool and only second a direct sales tool. A wishlist is an intent signal, not a purchase, so the demo’s effect on sales is indirect and has to be tracked in stages.
Game World Observer’s analysis of Steam demo visibility includes a developer postmortem for Mob Factory. Its developer saw huge spikes in wishlist additions after releasing a demo, compared with a months-long lull without one, and reached thousands of wishlists he would never have reached otherwise. That is a single case, but it shows the typical mechanism: the demo gives people something to play and a reason to follow the game.
Expect a modest share of players to act on it. The How To Market A Game analysis of June 2026 Steam Next Fest data states plainly that most people will play a demo and not wishlist it. A demo is worth building when you accept that outcome and judge it by the wishlists it adds, not by how many players try it.
Reading demo conversion numbers
Demo conversion rate here means the share of demo players who go on to wishlist the game. Valve shows demo play and wishlist statistics to developers who took part in Steam Next Fest, and the figures below come from an analysis of games in the June 2026 festival.
| Measure | Value | Planning use |
|---|---|---|
| 30th percentile of surveyed games | 15.9% demo-to-wishlist | A result near this level is a prompt to review the demo ending and store page before the next push. |
| Median of surveyed games | 19.3% | A reasonable midpoint target for a competent demo. |
| 70th percentile of surveyed games | 23.2% | A strong result relative to peers, not a baseline to expect. |
| Example game | 24.5% (175 of 713 players wishlisted after playing) | Sits above the 70th percentile, so treat it as a best-case reference. |
Figures are from How To Market A Game’s Next Fest demo analysis, which is an industry analyst blog rather than Valve documentation.
The same analysis notes that the trendline of conversion against total wishlists points only slightly upward towards the highest performing games, so a good conversion rate is a useful signal but does not by itself explain how large a game’s audience becomes. Many fans also avoid demos and wait for full release so they are not spoiled, which caps the share a demo can ever convert.
Steam demo best practices
The practices with evidence behind them concern timing and exposure, not demo content.
- Use the festival and streamer channels. Game World Observer describes a demo as unlocking two essential marketing channels, streamers and festivals, and calls demos a way to get streamers playing before the full release. It adds that getting a big streamer’s attention before launch greatly increases wishlists and potential sales.
- Leave the demo up after the festival. The same Steam demo visibility analysis advises keeping the demo available for as long as possible, because it keeps working for discovery once the event ends.
- Check Valve’s post-festival stats. If the game took part in Steam Next Fest, the demo play and wishlist figures Valve reports are the starting point for the conversion benchmark above.
Where to end a puzzle demo
End a puzzle demo after the core mechanic has had room to deepen, but before the solutions that make the full game feel fresh are used up. A demo that stops at the first easy tutorial gives players no reason to want more, and one that reveals every twist gives spoiler-averse fans nothing to wait for.
This is a design judgement rather than a measured rule, but the evidence points the same way. Game World Observer notes that demos tend to underperform when a game hooks the player with gimmicky, one-off mechanics. A puzzle game built on a single trick has little left after the demo, while one whose mechanic keeps producing new problems gives the demo a natural cliffhanger: a clear sign that harder variations are coming.
Use the conversion benchmark to test the ending. If demo-to-wishlist conversion is near the lower end of the range while players clearly finish the demo, the ending is the first thing to change. Wider design pitfalls that can sink a puzzle release are covered in common mistakes making a puzzle game.
Demo or free version
Choose a demo on Steam when the aim is festival and streamer exposure, and choose a free version only when you can accept its extra conditions. The two serve different goals, and the evidence favours the demo for wishlist building.
- Demo. A separate build with its own store presence, which makes it eligible for festival and streamer attention. A Steam community discussion points out that demos are separate builds that cost resources to maintain, so budget for updating it.
- Free weekend. The same Steam community discussion states that free weekends must be linked to a sale event and approved by Valve. That makes them a timed promotion, not a standing way for new players to try the game.
The festival and streamer evidence discussed above is about demos specifically, so a free version without a demo should not be expected to deliver the same exposure.
Free levels as a demo on mobile
On mobile, the closest equivalent of a demo is the free opening levels inside the game itself. A phone player judges the game from the first levels, so the point where the paywall appears plays the same role as the end of a Steam demo.
Because the free levels live in the same app, there is no second build to maintain, which removes the cost the Steam discussion attributes to separate demo builds. The end-of-demo advice still applies: lock content after the mechanic has developed, not before it has had a chance to show depth. Wishlists belong to Steam, so on mobile the stage to track is how many players reach the locked packs compared with how many unlock them.
Collecting demo feedback
A short feedback survey after the demo explains the conversion number, which on its own cannot say why players left. Keep it brief and focused on the decision points that conversion depends on.
- Where they stopped. Ask the player to name the last puzzle they remember, which shows whether the ending lands.
- Whether they would wishlist. A direct yes or no, followed by a short reason, links opinion to the metric you track.
- What they expected next. Answers show whether the demo promised more than the full game offers.
Quick rating prompts work for sentiment, but observation tells you more about confusion and pacing. For question wording and what to watch during sessions, see what to ask puzzle game playtesters.
Frequently asked questions
| Question | Answer |
|---|---|
| Does a high wishlist count prove the demo converts well? | No. The Next Fest analysis found a few games that earned over 15,000 wishlists yet were below a 15% demo conversion rate. |
| Does a streamer video change conversion? | It can. In a postmortem cited by Game World Observer, one game’s highest wishlist-to-sales conversion occurred in the month of a popular YouTuber’s video. |
| Can a demo lower sales? | Older console data cited by Game World Observer showed games with demos selling significantly worse than trailer-only titles. That evidence concerns consoles, and the Steam examples above point the other way for wishlists. |