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How to make a good game demo for Steam
DreamEp, founder of NextWishlist · Updated · 3 min read
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Short answerKeep it to about 15 to 30 minutes, put the core loop in the first 90 seconds, make it look final, and end on a high that sends players to your Steam page. In June 2026 the median demo turned about 19% of its players into wishlists.
A good demo isn't a free chunk of your game: it's an advert players can hold. It must show your best idea fast, end while players still want more, and send them back to your Steam page. Here is how practitioners build one, and the public numbers to judge yours.
01How long should a Steam demo be?
Aim for 15 to 30 minutes for a first playthrough. Long enough to show your core loop and one surprise, short enough that players finish it and leave wanting more. Replayable games (roguelikes, builders) can let players keep going, as long as the demo has a clear end to its content.
Public benchmarks show that median playtime grows with success: about 7 minutes for the Bronze tier, 18 for Silver, 38 for Gold and 65 for Diamond (June 2026). Playtime follows a good demo, it doesn't make one: padding yours won't move you up a tier.
02The first minutes decide everything
- Your core loop within the first 90 seconds. No long intro, no menu maze, no wall of text.
- Teach by playing. Short prompts in context beat a tutorial screen.
- Show your hook early: the mechanic, the art or the twist that your trailer promised.
- Respect the settings players expect: key remapping, volume, windowed mode, controller support if your genre needs it.
03A vertical slice, not a rough cut
Your demo should look like the final game, in miniature: tested by outside players, no crashes, tight controls, art and sound close to final. Players and creators judge the whole game on it, and a buggy demo is remembered longer than a missing one.
Valve recommends disabling achievements in demos and granting them in the full game after purchase, and using shared Steam Cloud storage once the game is out, so players keep their progress.
04End on a high, and point to your page
Stop the demo at a moment of momentum, just after a reveal or a new ability, not after the hardest fight. Then show a short end screen: thank the player and invite them to wishlist the game. Steam also adds a prominent link from the demo in the player's library to your game's store page.
Valve's review rules forbid asking players to review your product from inside it, so keep that end screen about the wishlist, never about reviews.
05Is your demo converting?
- In June 2026, games surveyed turned a median of 19.3% of their demo players into wishlists (30th percentile 15.9%, 70th percentile 23.2%).
- The same analysis warns not to over-read that rate: it barely rises with success, and a small group of players samples almost every demo of a fest without wishlisting.
- Your page still does most of the work: 68% to 88% of fest wishlists come from players who never launched the demo.
So fix a demo that loses players in its first minutes or that crashes, but judge your demo on wishlists gained overall, not on its conversion rate alone.
06Test it before Steam does
Watch people play without helping them, note where they stop, and fix the first five minutes first. If you need more testers, Steam's own Playtest lets players sign up from your store page. Then choose when to release your Steam demo.
07See how your demo compares
NextWishlist reads your demo's players and reviews every night and compares them with demos in your genre, so you know whether to polish the demo or bring it more players. Join the private beta.
How to make a good game demo for Steam: quick answers
How long should a Steam demo be?
About 15 to 30 minutes for a first playthrough, with the core loop in the first 90 seconds and an ending that leaves players wanting more.
What is a good Steam demo conversion rate?
In June 2026, games surveyed turned a median of 19.3% of demo players into wishlists, with 15.9% at the 30th percentile and 23.2% at the 70th. The rate barely rises with success, so don't over-read it.
Should a demo have achievements?
Valve recommends disabling achievements in the demo and granting them in the full game after purchase.
Can I ask demo players for a review?
Not from inside the demo: Valve forbids asking customers to review a product from within the application. Ask for the wishlist instead.
Should my demo be a vertical slice?
Yes: a short piece of the game that looks final, tested by outside players, with no crashes, tight controls and art and sound close to final.
Sources
Valve's rules can change: the official Steamworks page always wins. Practitioner benchmarks are surveys of developers, given as ranges.
- Valve, Demos (Steamworks) (read Oct 28, 2026)
- Valve, User reviews (Steamworks) (read Oct 28, 2026)
- presskit.gg, “How to build a game demo” (updated February 19, 2026)
- Chris Zukowski, Benchmarks (How To Market A Game) (updated June 2026)
- Chris Zukowski, “Nobody plays demos and that is OK” (June 30, 2026)
- Chris Zukowski, “Did AI Slop ruin Steam Next Fest June 2026?” (July 13, 2026, 119 developers)
Know when your demo is ready, and who it reaches.
Your demo's players and reviews read every night and compared with demos of your genre, with Valve's deadlines in your daily plan. NextWishlist is a Steam marketing tool for indie developers, in private beta.