What this site is
Pack Opening Simulator is a free browser game about the best ten seconds in card collecting: the tear, the flip, the moment a gold border shows up. You open a booster pack of five cards, keep whatever you pull, and try to collect a small original set of 25 cards. There is no account, no download, no payment and no app store. Open the page, press play, and five cards flip over.
It is one page, one set, one loop. That is the whole product.
At a glance
| Item | Detail |
|---|---|
| What it is | A free, browser-based pack opening simulator and card collection game |
| Pack | Five cards per pack, and every card is rolled on its own |
| Rarities | Five tiers: Common, Uncommon, Rare, Epic, Legendary |
| Cards | 25 original cards (10 / 6 / 4 / 3 / 2 across the tiers) |
| Price | Free. No signup, no download, no in-game purchases, no real-money prizes |
| Works on | Any modern browser: iPhone, Android, iPad, Windows, Mac, Chromebook |
| Progress | Saved in your own browser on your device, not on our server |
| Launched | November 2026 |
What you can do here
- Open one pack at a time. Tap the gold pack, or press Open pack, and five cards flip in one after another.
- Open ten packs at once with Open 10 packs, which shows a rarity breakdown instead of fifty individual flips.
- Track a collection. The Collection panel shows packs opened, total points, how many of the 25 cards you own, and your best pull so far.
- Climb a leaderboard. Ranks submits your total points and shows where you land against other players.
- Play fullscreen by tapping Fullscreen, which hides the browser chrome and fills the screen.
How the pull rates work
Every one of the five cards in a pack is rolled independently, against fixed per-card probabilities: Common 60%, Uncommon 25%, Rare 10%, Epic 4%, Legendary 1%. Each tier then draws a random card from its own slice of the set, so a Legendary pull picks between the two Legendary cards.
Those numbers are not an estimate taken from opening a big pile of packs. They are the values the game code applies to every single card, which means the rate you see is the rate you get, and there is no sample size to check because there is no sampling. The pull rates page works through what they add up to per pack, how hard one specific card is to find, and why this is a different kind of number from the estimates published by simulators that cover real Pokemon sets.
Where the cards come from
Every card is drawn from scratch: original creature names, original artwork built from gradients and geometric shapes, original colour palettes. Ten Commons, six Uncommons, four Rares, three Epics and two Legendaries, and the border colour tells you the rarity at a glance. Nothing here is official trading card art, and no official creature is used.
Why 25 cards and not 20,000? Because this is not a catalogue of real sets. It is one small, finished set whose odds fit on a single printed table, so you can see exactly what you are chasing and what it costs to chase it, instead of scrolling a set list.
What this site is not
This is an independent, fan-made pack opening simulator. It is not affiliated with, endorsed by, sponsored by or approved by Nintendo, Creatures Inc., GAME FREAK or The Pokemon Company. It uses no official artwork, logos or character designs. Pokemon and all related names are trademarks of their respective owners and are referred to here only to describe what kind of game this is. If what you want is to open packs from real sets, with real card art and market prices, the home page names the sites that do that well.
It is also not a marketplace. Cards here have no cash value, there is nothing to sell and nothing to trade, and no real-money prizes exist. Points and collections are a scoreboard, not a wallet.
Who runs it
A small independent developer, working alone. The game, the card art, the text on this site and the code behind it are all made by the same person. That is why the site is small and why there is no support team to escalate to: questions and bug reports go to the contact page, and they are read by the person who can actually fix the problem.
How it is paid for
It is not, in any direct sense. There is no shop, no paid pack, no paid currency, no subscription, no ad network and no affiliate deal behind a recommendation. Nothing here asks for a card number. If that ever changes, the site will say so plainly on the home page and in the privacy policy first, because a site that sells packs should admit it.
Your collection and pack history live in your own browser's storage on your own device. They are not sent to a server, they are not tied to an account, and they cannot be seen by the developer.
Get in touch
Bug reports, corrections and questions all go through the contact page. If you find a number on this site that does not match the game, that is worth reporting: the odds are supposed to be exact, and a mismatch is a bug.
Last updated: 16 November 2026.