demos are now one of the most powerful discovery tools in PC gaming. on spawnd, demos go further: they are instantly playable, instantly shareable, and portable across the entire web. this guide covers practical, proven guidelines used by top-performing developers to build demos that convert.

1. in-game engagement

show the hook, not the tutorial

players should hit your game’s most exciting content immediately. early levels often lack abilities, upgrades, or intensity. instead, choose a slice that demonstrates peak fun!

examples:

bullet hell demos that jump directly into a mid-tier stage with full firepower
action demos that start during a fight rather than during intro exposition
strategy demos beginning at a meaningful decision point

goal: deliver the “wow” moment fast.

keep time-to-play short

reduce everything between “play” and “movement input.” avoid:

long logo stacks
unskippable cinematics
heavy UI sequences

if they must remain, ensure they are fully skippable with a simple keypress or hold.

end your demo with a strong CTA

include:

a game page/ wishlist link in the pause menu
a wishlist CTA on the end screen
an optional brief teaser montage showing late-game abilities or environments

these elements significantly increase wishlist conversion.

keep the demo short

high-performing demos across Steam Next Fest typically run around 15 minutes. end on a cliffhanger to create desire for the full game.

2. marketing and visibility

time your demo release

avoid releasing too early while systems or visuals are still raw. polished demos perform better and avoid negative early impressions.

suggested timing:

1–2 months before launch, or
1–2 weeks before Steam Next Fest to gain pre-event traction.

combine spawnd with major beats

a proven flow:

launch the demo first on spawnd
learn, polish and improve your demo
sse that momentum going into Steam Next Fest
after the Fest ends, continue sharing the spawnd demo link to maintain traffic and wishlist flow

this prevents the usual post-Fest drop-off.

use UTMs everywhere

spawnd tracks all UTMs and even forwards them to Steam.

👍
you can learn more about UTMs here!.

example: https://spawnd.gg/game/yourgame?utm_source=discord&utm_campaign=demo_launch

use UTMs for:

social posts
devlogs
influencer links
trailers
press
newsletters

this gives you a clear picture of what actually drives wishlists.

leverage the embed power

spawnd demos can be embedded anywhere, like a YouTube video!

embed your demo in:

websites
blog posts
kickstarter updates
press reviews
landing pages
influencer posts

every embed is a frictionless gateway to your game! learn more about game embedding here.

3. technical optimization

minimize load time

use:

progressive loading or equivalent
Gzip or Brotli compression
asset streaming ( like Unity's addressables )
texture packing
reduced initial payload

fast load = higher retention.

keep build size lean

recommended thresholds:

< 200MB ideal
< 300MB acceptable
+400MB likely to impact retention

remove unused assets, reduce texture sizes, and strip debug data.

optimize UI and inputs for the web

ensure:

mouse lock works instantly
game fits the canvas correctly (ie. no clipping on different screens)
gamepad is detected automatically
fullscreen transitions smoothly
desktop experience is prioritized

manage memory efficiently

most browsers operate comfortably below ~1.5–2GB heap.
use:

incremental GC
smaller scene chunks
additive loading

test across browsers

verify consistent behavior in:

Chrome
Edge
Firefox
Opera
Safari 😫

4. final demo good practices checklist

✅ core hook within 30 seconds

✅ skippable (or no) logos and cutscenes

✅ ˜15 minute polished demo

✅ Steam link in pause menu

✅ wishlist CTA at end of the demo

✅ optional teaser or montage

✅ UTM links added to all posts

✅ progressive loading enabled

✅ optimized build size

✅ works well with mouse, keyboard, gamepad (and maybe touch screens)

✅ tested on multiple browsers

✅ embed tested and functional

a strong Spawnd demo amplifies reach considerably, multiplies wishlist conversions, and expands your game’s visibility across the entire web. use these guidelines to craft a demo that captures attention instantly and converts players into future fans!