How to add Steam trading cards, from 2,354 indie games

Of 706 paid indie games launched on Steam from 2020 to 2022 that have since drawn 1,000 or more Steam reviews, 337 (48%) have no trading cards. That includes plenty of well-loved games: among the 553 rated 80% positive or better, 46% have none.

If your game is already out and has no cards, you’re in good company, and it is almost certainly not too late. This is what Valve requires, how to add a set to a released game, and what the cards are and aren’t worth.

Valve turns cards on when sales and players clear a private bar

There is no application. Valve’s Steamworks documentation says it “automatically enables profile customization features as games reach certain player and sales metrics,” and that it rechecks every game “several times per day.” Trading cards are one of those features, along with the badges, emoticons and profile backgrounds that come with them.

Valve doesn’t publish the bar. It does say what goes into it: “Our confidence metric is based on sales and player engagement figures. We do not include data from user reviews, wishlists, total playtime, or any other judgment of the ‘quality’ of the game.”

The bar exists because of fraud. In 2017 Valve described developers who handed thousands of free keys to bots that idled in their games to collect cards. Its fix was to hold card drops until it was clear a game was “actually being bought and played by genuine users.”

So a small game isn’t shut out because it is small. Among the paid indie games from 2020 to 2022 that we checked, the store lists the trading-card feature on 42 with fewer than 50 Steam reviews. What matters is real people buying and playing.

Nearly half of indie games with 1,000+ reviews have no cards

We took every paid indie game that launched on Steam from 2020 to 2022 and has drawn 100 or more Steam-purchase reviews since, 2,354 games. On October 21, 2026, we searched the Steam Community Market for each game’s cards.

Cards become more common as games grow, but only above about 3,000 reviews do most games have them. 17% of games with 100 to 199 reviews have a set. At 1,000 to 2,999 reviews it is 46%. Even among games with 10,000 or more, 37% have none.

1. 100 to 199 reviews (667 games)17.1%
2. 200 to 499 (656)27.4%
3. 500 to 999 (325)35.7%
4. 1,000 to 2,999 (367)46.0%
5. 3,000 to 9,999 (202)56.4%
6. 10,000 or more (137)62.8%

Paid indie games launched on Steam 2020 to 2022, by Steam-purchase reviews through August 2026. Share with trading cards listed on the Steam Community Market, searched October 21, 2026.

Source: Strike Two analysis of Steam Market data

Reviews aren’t sales, and Valve says reviews play no part in its metric.

But a game with a thousand Steam reviews has sold to a lot of real people. At that size, our read is that most of the games without cards aren’t waiting on Valve. Their developers never made a set. Valve doesn’t publish who qualifies, so we can’t check.

Self-published games are the likeliest to be missing them. At 1,000 or more reviews, 45% of self-published games have cards, against 59% of games that credit a separate publisher. Publisher games were ahead at every size we looked at.

We understand why. Cards are art work that lands after launch, when the team is tired, the bug reports are louder and nobody is asking for emoticons.

A quarter of card sets arrived a year or more after launch

For the 779 games with cards, we read their Steam announcements and looked for the post that said cards were live. 270 had one, which dates the arrival.

The median set arrived 3 months after launch. 37% came in the launch month or before. But 28.5% came a year or more later, and 15% more than two years later.

1. Before launch9.6%
2. Launch month or the next27.8%
3. 2 to 6 months after21.5%
4. 7 to 12 months after14.8%
5. 13 to 24 months after11.1%
6. 25 or more months after15.2%

Games from the chart above with cards, dated by the first Steam announcement whose title mentions trading cards or card drops. Announcements read October 21, 2026.

Source: Strike Two analysis of Steam news data

Late isn’t a waste for your existing players. Valve’s 2017 announcement says cards drop for playtime that came before them: “you’ll receive cards for your playtime when the developer adds cards and reaches the confidence metric.” Everyone who already played gets drops the day your set goes live.

A quarter of games with cards don’t say so on the store page

Here is the quickest fix in this post. 206 of the 779 games with a card set on the Market (26%) don’t list “Steam Trading Cards” among the features on their store page.

That label matters to the players who care most. Steam’s store search can filter for games with trading cards, and a game without the label doesn’t appear. We checked one of the 206, a well-known game with a full set: with the filter on, a search for its exact name came back empty.

We couldn’t find Valve documentation on how that label gets set. If your game has cards and your store page doesn’t list them, check the features chosen for your app in Steamworks, and ask Valve support if the box isn’t there.

Cards won’t sell your game

Be clear-eyed about the money. Valve confirms that developers earn from card sales on the Market; its 2017 post says the card farmers’ “developers make money by farming cards.” But the cards are cheap. The median regular card in our search was listed at 9 cents.

Valve is also blunt about buyers: “We do not find that lack of profile customization options is a major factor for customers who are deciding whether to buy your game.” It says the feature has no effect on store visibility, search or discovery.

We found no lift in activity either. For the 71 games that announced cards at least ten months after launch and had steady reviews beforehand, the announcement month and the next ran a median 0.93 times the months before.

Six months earlier, the same games ran 0.89. That is a small sample, and many of those posts were bundled with updates, but it is not a bump.

What cards do is serve the players who already love your game. Badges, profile backgrounds and emoticons let people show your game off. And Valve says games without these features “do not count towards Game Collector or Achievement Collector totals” on Steam profiles, which matters to the achievement hunters who finish everything.

When adding cards is the wrong move

• If your game is free with nothing to buy, you can’t. Valve allows cards on free apps only with in-app purchases, and players get a drop “for every $9 USD equivalent spent.”
• If your art is adult, the set can’t be. Card assets “must be globally all-ages appropriate, as they are not age-gated.” Some games can make a tasteful set from their world; some can’t.
• If you have one artist and an update waiting, do the update. A content update can earn a Steam update visibility round and update months run well ahead of quiet ones in our data. Card announcements didn’t.
• If the game hasn’t qualified yet, you can’t speed that up. Valve checks automatically, and only sales and real players move it.

What to do next with a game that’s already out

1. Look at the Community tab in Steamworks. From your app’s landing page, go to Edit Steamworks Settings, then Community, then Community Items. Valve keeps the full checklist there.
2. Make the set. Valve asks for 5 to 15 cards (most sets are 6 to 10, fewer for short games), at least 5 emoticons, badges for levels 1 to 5 plus a foil badge, and 3 to 10 profile backgrounds. Valve provides templates. The rule for backgrounds: dark, fading to black at the edges, no logos.
3. Set the drop rules and submit. You choose the minimum playtime for a drop. Players earn half the set by playing and trade or buy the rest. Valve’s review “typically takes 2-3 days.”
4. Publish, then check your store page. Make sure the trading cards feature appears in the list. If it doesn’t, players filtering for cards won’t find you.
5. Tell your players. Post an announcement. Everyone who has played will get drops for their past playtime, which can give people who drifted away a reason to open your game again. After cards ship, you can add animated items to the Steam Points Shop.

Cards are a small, honest thing to do for a game that’s already out. The bigger levers are still the updates you post, the platforms you reach and what a partner can take on. Strike Two partners on games that are already built, so read this knowing where it comes from.

How we measured it

The games are the paid titles under Steam’s Indie tag that launched from January 2020 to December 2022, the same population as our study of quiet launches. 2,354 of them have 100 or more Steam-purchase reviews through August 2026, counted from Steam’s review histories.

For each of the 2,354 we searched the Steam Community Market for trading cards tagged with the game, on October 21, 2026. A game has cards when any are listed. We also read each game’s store features. That label turned out to miss real sets, so the Market is the measure throughout.

In a random check of 40 large games, the label disagreed with the Market twice, both times a game with cards and no label.

Arrival dates come from each card game’s Steam community announcements: the first post whose title mentions trading cards or card drops. Only 270 of 779 had one, and developers who announced their cards may differ from those who didn’t.

The activity comparison uses Steam-purchase reviews in the announcement month and the next, against the three months before, for announcements at least ten months after launch.

The limits: Valve’s metric is private, so we can’t say which games without cards would qualify. A set with no live listings would be missed, which matters only for small games. Card prices are the lowest listings on the first page of results, not sales. The data and code are kept with the rest of our Steam research.