If you're looking for games with as little cards as possible, the following incomplete list shows games which only have five cards each: Don't Starve Super Meat
Boy
The Swapper DLC Quest Trine 2 Bastion
The Walking Dead Bleed Counter-Strike: Global Offensive Defy Gravity for a probably complete list of games with trading cards, have a look at this one Costs:
With a current card price of ~.2$ per card, that's about 1$/badge, so 100XP for 1$. Due to the level limit you cannot do this forever with the same game though Other ways to obtain XP are: "Years of service
" I got 250 XP for five years,
so I guess it's 50 XP per year.
Costs: time "Community leader" (Max: Lvl 3) Just do 28/29 of the stuff mentioned there
(post a screenshot, trade, link to facebooke etc).
Costs: Data "Director of Acquisitions" some XP
per game you own (1-5 XP/game, see here as per Nolonar's answer ).
I don't know how DLCs count here, and the scaling is probably non-linear.
Costs: a lot - even with an optimistic 10$/game you have to spend about 1000$ for another 100XP once you have many games "Steam Summer/Holiday Sale 201X; Potato Sack; Trading Card Beta Tester": XP based on the achievements/participation.
Costs: A time machine...
So in summary, apart from the up to 200 XP from the "Pillar of community" badges the most promising source of XP
are indeed gamecard badges.
The badges with fewer gamecards are probably easier to obtain, but then again they may also be more expensive on the market.
gaming.stackexchange.com/users/88/Zommuter
By far the easiest way, is to do nothing.
You get 50 XP per year since your registration.
By far the fastest way, is to buy games with trading cards as well as their cards.
For every game owned, you get a few extra XP; For more information on how many games award how much XP, read here .Trading card badges awards 100 XP each.
You can only gather half of the cards available per game, unless you receive a booster pack.
For the rest, you have to trade.
gaming.stackexchange.com/users/46740/Nolonar
This is my little strategy to farm some XP and Boosters.
-Buy low priced games from Bundles and sales.
Like Humble Bundle (~5 games for 1$ minimum).
Look up if there are any games with trading cards first, in case you're not interested in the games themselves.
-Look for games that needs like only 5 cards to make a badge.
That way you don't need to put much money into buying the cards that are left.
And you can also sell your other cards for games that need like 15 cards to make a badge.
In that way you will level pretty fast.
-Get eligible for as many games you can for a higher chance to get booster packs.
I'm currently eligible for ~25 games
and I have maybe ~50 trading card games left to farm.
-Buying games from bundles etc is a good, cheap and pretty fast way to lvl up since you get xp for every game you buy/own.
And if you love playing games like me
it's another bonus for you!
gaming.stackexchange.com/users/62612/Alex
You can buy steam cards for games at the community market...
These cards can still be used in the badge collection.
Most cards I see are around 15 cents, some games cheaper and some games More expensive
gaming.stackexchange.com/users/65883/Dead Thread Commenter
In my opinion the fastest way is by participating in sales to get badges, buying games to get xp, getting 50 xp per year since registration, and buying cards in the market to craft badges.
I would recommend for you to badge up on cards from games that have relatively small collections, a lot of people play, and thus have cheaper prices.
Example: Castle Crashers.
gaming.stackexchange.com/users/69281/extras13
Easiest badges are: Community Ambassador(200XP),which is made by completing community tasks.
Gem maker(100XP),Buy a cheap loading screen or emoticon of 0.03$
and convert it into gems.
Participating in sale events(100-200XP).
Years of service(1year=50XP).
None of the above works for a limited account, I think.
gaming.stackexchange.com/users/115539/Farooq Sk
Another great way of getting easy badges is to play on some F2P games (that have trading cards), and then either complete the badges for the game or selling the cards you get with the game on the Market and buying any cards with the money you got for any sets you need to complete.
Costs: effort.
F2P games with Trading Cards include: Team Fortress 2
Strife Dota
2 Warframe Dead Island:
Epidemic Quake Live Loadout
gaming.stackexchange.com/users/116233/someone
While there's tons of badges out there, collecting cards and cards takes a lot of time, and only results in a 100 xp badge, is there anything other than just crafting badges that would help increase more exp?  Are there games that have extremely few cards to collect? Or is there an easier way to level up my profile?
What is the easiest way to level up my profile?
gaming.stackexchange.com
<steam><steam-trading-cards>
gaming.stackexchange.com/questions/124990
gaming.stackexchange.com/users/18916/korrasaur
The easiest way is to do nothing. You can buy steam cards at the community market or play on some F2P games to get easy badges. In order to gather experience, to level up a profile, a user has to invest in different activities such as combining trading cards.
You can buy steam cards for games at the community market…
Listed ways to level up a profile.