If you have ever played hundreds of rounds of 7 Wonders or Race for the Galaxy, you already know the toll that shuffling takes on your cards. The edges fray, the corners soften, and those beautifully printed double-sided cards start showing ghosting through the back. Sleeving fixes all of that. But here is the catch: mini-American card sleeves come in several sizes, and picking the wrong one means sleeves that are too loose, too tight, or simply useless.
In this guide, I will walk you through exactly how to sleeve mini-American cards for 7 Wonders and Race for the Galaxy. The short answer: Race for the Galaxy uses 63.5 x 88mm sleeves (109 cards in the base game), and 7 Wonders uses 65 x 100mm sleeves for its larger cards. I will also cover what the mini-American format actually is, which brands hold up best, how to physically slide cards into sleeves without bending them, and practical tips for shuffling once everything is protected.
Whether you are sleeving your first deck or replacing worn-out sleeves after 1,000 plays, this guide has you covered for 2026.
Table of Contents
What Are Mini-American Cards?
Mini-American cards are a specific card format used by publishers like Fantasy Flight Games (FFG), Repos Production, and others. The mini-American size typically measures approximately 41 x 63mm up to 45 x 68mm, depending on the publisher. This is noticeably smaller than a standard American board game card (around 57 x 89mm) and much smaller than a standard poker or Magic: The Gathering card.
The confusion usually starts here. People hear “American card sleeves” and assume one universal size. There is actually a whole spectrum: standard American, mini-American, and even micro cards. Fantasy Flight Games uses a color-coded system to simplify this. Their Yellow sleeves correspond to the mini-American format (FFG product code sleeves marked Yellow), and their Green sleeves cover standard American. If you have ever seen someone mention “FFG Yellow” on a forum, that is what they mean.
7 Wonders and Race for the Galaxy both fall into this mini-American family, but they sit at slightly different points on the size chart. That difference matters when you are buying sleeves, as even a few millimeters of slack changes how the card feels during shuffling.
Other popular games using mini-American format cards include Arkham Horror LCG, Android: Netrunner (FFG), and various expansions across the FFG catalog. Once you learn to identify the format, sleeving becomes straightforward.
Card Dimensions and Sleeve Sizes for 7 Wonders and Race for the Galaxy
Getting the right sleeve size is the single most important step. Here is the breakdown for both games.
Race for the Galaxy Card Size
Race for the Galaxy cards measure approximately 63.5 x 88mm. The base game contains 109 cards, and with expansions the total grows to around 150 cards. You will want standard American-sized sleeves for this game, not mini-American. Despite being grouped in discussions about mini-American games, Race for the Galaxy’s cards are actually closer to standard American dimensions.
Recommended sleeve size: 63.5 x 88mm (sometimes listed as 63 x 88mm or 66 x 91mm depending on brand). If you are buying Mayday Premium, Arcane Tinmen, or Dragon Shield, look for their standard American option.
Total sleeves needed for base game: 109. With all expansions (The Gathering Storm, Rebel vs Imperium, The Brink of War, Artifacts): approximately 150. I always recommend buying a pack of 100 plus a smaller pack of 50, or just grabbing 200 to have spares for damaged sleeves.
7 Wonders Card Size
7 Wonders uses larger cards measuring approximately 65 x 100mm. This is the size most commonly referred to as the “7 Wonders sleeve” in board game retail. The base game has 49 cards in the main deck, but when you factor in all components including age cards, guild cards, and wonder boards, the total sleeve count grows.
Recommended sleeve size: 65 x 100mm. Brands like Mayday, Ultra Pro, and Sleeve Kings all make this specific size. Clear sleeves are preferred by most players because the card backs in 7 Wonders contain important game information that needs to remain visible.
For 7 Wonders with expansions (Leaders, Cities, Babel, and the promo cards), expect to sleeve around 117 to 130 cards total. The Leaders expansion adds 36 cards, Cities adds 28, and Babel adds another set.
Quick Size Reference
Race for the Galaxy: 63.5 x 88mm sleeves. Base game needs 109, full collection needs about 150.
7 Wonders: 65 x 100mm sleeves. Base game needs approximately 49, full collection with expansions needs roughly 117-130.
If you accidentally buy the wrong size, do not force the cards in. Sleeves that are too tight can bend card corners, and sleeves that are too loose will slide around during play and make shuffling a nightmare.
How to Sleeve Mini-American Cards: Step-by-Step
Now for the part no competitor covers: the actual physical process of sleeving your cards. I have sleeved thousands of cards across dozens of games, and the technique below minimizes damage and air bubbles.
What You Need
You will need your card sleeves, a clean flat surface (a table or desk wiped free of dust), dry hands (wash and thoroughly dry them first), and optionally a microfiber cloth for wiping down cards before sleeving. That is it. No special tools required.
Step 1: Sort and Count Your Cards
Before sleeving anything, count your cards and compare to the number of sleeves you have. Lay your sleeves out in stacks of 50 so you can track progress. This sounds obvious, but I have started sleeving only to run out halfway through and lose momentum.
Step 2: Inspect Cards for Existing Damage
Flip through your deck once. Look for cards with bent corners, dirt marks, or existing edge wear. Wipe dirty cards gently with a dry microfiber cloth. Sleeving a dirty card traps the grime inside and can actually accelerate wear over time.
Step 3: Hold the Sleeve Opening Up
Take a single sleeve and hold it with the open end facing up. Most board game sleeves are open on one short end. Make sure the clear side faces you and any printed brand strip is at the sealed bottom.
Step 4: Slide the Card In Gently
Pick up a card by its edges (avoid touching the face with your fingertips). Align the bottom edge of the card with the opening of the sleeve and slide it straight down. Do not angle the card or push from the center, as this can catch the inner wall of the sleeve and create a crease. The card should glide in smoothly with light, even pressure.
Step 5: Press Out Air Bubbles
Once the card is fully inserted, lay it flat on your table. Run your thumb from the center outward to push out any trapped air. A small air pocket is normal and will work itself out during shuffling, but large bubbles make the deck stack unevenly.
Step 6: Check the Fit
The card should sit flush against the bottom and sides of the sleeve with no more than 1-2mm of excess sleeve at the top. If the card slides around inside, the sleeve is too large. If the card barely fits or you had to force it, the sleeve is too small and you risk bending the card.
Step 7: Build Your Deck and Shuffle Once
Once all cards are sleeved, stack them and shuffle the deck a few times. This helps the sleeves settle and conform to the cards. You may hear some crackling at first, which is completely normal.
For double-sided cards like those in Race for the Galaxy, use opaque-backed sleeves if you want to hide the card identity during shuffling, or clear sleeves if you want to show both sides. Most Race for the Galaxy players use clear sleeves since the card backs are uniform.
Choosing the Right Mini-American Card Sleeves
Not all sleeves are created equal. The brand, thickness, and finish you choose affects durability, shuffle feel, and how your game looks on the table.
Premium vs Standard Sleeves
Standard sleeves typically have a thickness of around 40-60 microns. They are inexpensive, lightweight, and perfectly fine for games you play occasionally. Premium sleeves range from 90 to 120 microns and offer noticeably better protection and a more rigid feel. Forum users on r/boardgames consistently report that premium sleeves feel better and last longer, but standard sleeves are sufficient for casual play.
My recommendation: if you play 7 Wonders or Race for the Galaxy more than once a month, invest in premium sleeves. The difference in shuffle feel is significant, and premium sleeves resist splitting at the seams far better than standard ones.
Micron Thickness Explained
Micron thickness refers to the thickness of the plastic film used in each sleeve, measured in microns (one-thousandth of a millimeter). Higher micron numbers mean thicker, more rigid sleeves. Here is a general guide:
40-60 microns: Standard thickness. Lightweight, affordable, adequate protection for light use.
60-90 microns: Mid-range. Good balance of durability and flexibility. My personal sweet spot for most board games.
90-120 microns: Premium thickness. Rigid, durable, excellent shuffle feel. Ideal for heavily played decks.
Matte vs Gloss Finish
Gloss sleeves are shiny and make card art pop, but they can produce glare under overhead lighting and tend to stick together when new. Matte sleeves have a non-reflective finish that reduces glare and provides a smoother shuffle. Matte sleeves are generally preferred by tournament and frequent players because they handle better over time.
For 7 Wonders, where you are passing cards around the table and reading them from angles, matte sleeves reduce glare and make the game more comfortable. For Race for the Galaxy, either finish works well since you hold your own hand of cards.
Popular Sleeve Brands
Mayday Games makes both Premium and Standard sleeve kits specifically for popular games. Their Premium line is around 100 microns and well-regarded in the community. Mayday also sells game-specific kits with the exact count you need.
Ultra Pro is one of the most widely available brands. Their Pro-Fit and Standard lines cover most card sizes. Quality is consistent and pricing is competitive.
Dragon Shield (made by Arcane Tinmen) is considered top-tier by many hobbyists. Their sleeves are typically 120 microns, feature excellent durability, and have a distinctive matte finish. They are pricier but are the go-to for games played hundreds of times.
Sleeve Kings offer a good budget-to-mid-range option with clear sizing labels printed on the packaging. They are a solid choice if you are sleeving multiple games at once.
Tips for Shuffling and Storing Sleeved Cards
One of the most common complaints from forum users is that sleeved cards are harder to shuffle and slippery to stack. Here is how to handle both issues.
Shuffling Sleeved Cards
Riffle shuffling (the standard poker shuffle where you bend cards and let them interleave) does not work well with sleeves. The plastic sticks together and cards slide instead of meshing. Instead, use the mash shuffle technique: hold half the deck in each hand and push the two halves together, letting the cards interleave naturally. This is gentler on both sleeves and cards.
For smaller decks like those in 7 Wonders, a simple overhand shuffle works fine. Grip the deck loosely and pull sections from the middle, letting them fall back into the stack. Repeat five or six times for a good mix.
New sleeves will be slippery for the first few shuffles. After a game or two, the plastic develops a slight texture from handling and shuffling becomes much easier.
Storage Recommendations
Store sleeved cards in a deck box or the original game box standing upright. Do not rubber-band sleeved cards together, as the band will compress the sleeves and leave permanent indentations. If you need to secure a deck, use a soft card clip or a dedicated deck box.
In humid environments, consider adding a small silica gel packet to your storage box. Moisture can cause sleeves to stick together and may warp cardboard cards over time.
Why You Should Sleeve These Games?
Both 7 Wonders and Race for the Galaxy are games that reward repeated play. The more you play them, the more your cards get shuffled, passed, and handled. One forum user reported playing over 1,000 games of Race for the Galaxy unsleeved, and while the cards were still functional, they showed visible wear on edges and corners.
7 Wonders is particularly hard on cards because they are constantly passed between players each age. That back-and-forth motion causes friction on card edges and corners. Sleeving dramatically reduces this wear.
If you ever plan to trade or sell your games, sleeved cards in excellent condition command noticeably higher resale values. A sleeved copy of Race for the Galaxy with all expansions will sell faster and for more than a worn unsleeved copy.
Ultimately, sleeves cost a fraction of what these games cost. For a game you will play dozens or hundreds of times, that investment pays for itself in extended card life and better shuffle feel.
FAQs
What size are the card sleeves for Race for the Galaxy?
Race for the Galaxy cards measure approximately 63.5 x 88mm and require 63.5 x 88mm sleeves (sometimes sold as 63 x 88mm or 66 x 91mm depending on the brand). The base game has 109 cards, and the full collection with all expansions totals around 150 cards.
What size sleeves are the 7 Wonders cards?
7 Wonders cards measure approximately 65 x 100mm and require 65 x 100mm sleeves specifically. The base game has about 49 cards to sleeve, while adding expansions like Leaders, Cities, and Babel brings the total to approximately 117 to 130 cards.
How do you sleeve small cards without damaging them?
To sleeve small cards without damage, hold the sleeve open-end-up, grip the card by its edges, and slide it straight in with gentle even pressure. Do not angle the card or push from the center. Press out any trapped air by running your thumb from the center outward on a flat surface.
How many sleeves do I need for 7 Wonders?
For the 7 Wonders base game you need approximately 49 sleeves in the 65 x 100mm size. With the Leaders expansion add 36 more, with Cities add 28 more, and Babel adds another set, bringing the full collection total to roughly 117 to 130 sleeves. Buying 150 sleeves gives you spares.
Conclusion
Sleeving your mini-American cards for 7 Wonders and Race for the Galaxy is one of the simplest ways to extend the life of your favorite games. Remember the two key sizes: 63.5 x 88mm for Race for the Galaxy and 65 x 100mm for 7 Wonders. Choose premium sleeves if you play frequently, use matte finishes to reduce glare, and shuffle with the mash technique to keep your sleeves intact.
Now grab your sleeves, clear off a table, and give your cards the protection they deserve. Your future self, 500 plays from now, will thank you for it.