Rain.gg Promo Code for United States Players: A Sign-In Checklist

Rain.gg is a CS2 case unboxing site, and the code BONUS gives new accounts 3 free cases plus a 5% deposit bonus. For a player in the United States, the detail that matters most is that the free cases appear to arrive after a successful first deposit, not at the moment you register. Enter the code during sign-up, then check the deposit screen before you put in any money. Exact terms can change, and that screen shows the binding ones.

BONUS - 3 free cases and a 5% deposit bonus

The short answer before the long one

Here is the whole thing in four lines. The code is BONUS, and it goes in at registration, in the field meant for a referral or affiliate code. It is worth 3 cases and a 5% bonus on deposits, and the cases seem to follow a deposit. If you skip the code at sign-up, you may have no clean way to add it later.

I follow the Counter-Strike scene closely, from the Cloud9 Boston Major run in 2018 to the Austin Major crowds at the Moody Center in 2025. I have seen plenty of people rush a sign-up and regret it. The most common error is treating "free cases" as a no-strings gift, then wondering why nothing shows up in the inventory. Read the rest of this page before you click anything.

What the current offer includes and what it leaves open

The offer has two parts. One is a set of 3 free cases. The other is a 5% bonus on top of what you deposit. Rain.gg describes its signup reward as an extra deposit bonus plus three additional cases after a successful deposit, so I would plan around the deposit coming first.

The parts that are clear

The code is BONUS, always in capitals, typed exactly like that.
It is meant for registration, through the referral or affiliate code field.
The reward is 3 cases and a 5% deposit bonus.
Rain.gg also has separate, unrelated promos, so do not mix them up with this one.

The parts that are not spelled out

Some things are not published in a form I can quote. I do not know which cases are in the free set, or whether the 5% applies only to your first deposit or to later ones as well. I also can't tell you about expiry windows or conditions on withdrawing what you win. I will not guess at any of that. The deposit screen and the account rewards area are where binding terms live, and they can change without notice.

Rain.gg also runs other things that sit beside the signup code. Free Treat rains in chat every 30 minutes, reward cases are handed out daily, weekly and monthly, and monthly races run alongside them. Codes posted on the site's X account are one-claim promos for races and similar events. They are a different thing from the signup code, so do not treat them as replacements for it.

How the code works for players in the United States

Start with money. The United States uses the US dollar, and the Steam store here also prices in USD, so skins and wallet funds are already in a currency you think in. Whether Rain.gg shows balances in dollars is something to confirm on the deposit screen, not something I will promise.

Payment habits in the country include Visa, Mastercard and American Express cards, PayPal, Apple Pay, Google Pay, Venmo, Cash App and ACH bank transfers. Those are general online shopping habits, not a list of what Rain.gg takes. Open the deposit screen and see which methods it actually offers before you decide how to fund the account. If you like to research first, a rundown of CS2 skin sites gives another angle.

Then comes the legal side, and here I want to be careful. Gambling in the United States is regulated mainly by states, through state gaming commissions and lottery agencies, alongside federal laws such as the Wire Act and the UIGEA. Since the 2018 Murphy v. NCAA decision, each state decides on sports betting for itself. Only a minority of states permit online casino games. The minimum age depends on the state and the product, typically 21 for casinos and most sports betting, and 18 for some lotteries and other forms.

I am not telling you that case opening on Rain.gg is legal, licensed or allowed where you live. Check your own state's rules. Also confirm that Rain.gg accepts accounts from the United States before you deposit a cent.

There is a live issue too. In February 2026 New York's Attorney General sued Valve in state court, arguing that loot boxes in Counter-Strike 2, Dota 2 and Team Fortress 2 amount to illegal gambling under the state constitution. That is an allegation in a court case, not a verdict. It does show that this area is not settled, so keep an eye on your own state.

One more local reminder. In 2017 the Federal Trade Commission settled with the two YouTubers who owned CSGO Lotto, over promoting the site without disclosing their ownership. Whoever recommends a case site to you, including me, you should know who benefits.

Checklist from sign-in to your first case

I wrote this order for someone who has never touched the site. Do not skip step 3, because it is the one that trips people up.

Check your age and your local rules. Make sure you meet the minimum age that applies in your state, and that you are comfortable with the rules where you live.
Confirm eligibility. Look for any statement on the site about which countries it accepts, and make sure accounts from the United States are allowed before you go further.
Start registration and find the code field. Look for the field meant for a referral or affiliate code, and type BONUS in capitals before you finish creating the account.
Finish sign-in and secure the account. Use a strong, unique password. Turn on any extra login protection the site offers.
Open the deposit screen. Read which payment methods appear, what currency it shows and what it says about the 5% bonus. This screen has the binding terms.
Set a budget first. Pick an amount you can lose without it touching rent, bills or savings, and stay inside it.
Make a small deposit. A modest first deposit is enough to see whether the 3 cases and the 5% bonus show up as described.
Look for the cases in your account. If they do not appear after a successful deposit, check the rewards area before assuming something is broken.
Open your first case. Take your time, read what each case contains, and treat the result as entertainment, not income.

What the bonus is worth in dollars

A 5% bonus is small by design. It is a modest top-up, not a second bankroll. Here are simple examples at a few deposit sizes, assuming the bonus is calculated on the amount you deposit.

Deposit	5% bonus	Total credited
$20	$1.00	$21.00
$50	$2.50	$52.50
$100	$5.00	$105.00

The 3 free cases are harder to price, because I do not know which cases they are. A cheap case adds little, and a pricier one adds more, so judge them when you see them. The honest read is that the code gives you a bit of extra room to try the site, not a reason to deposit more than you planned. If the 5% applies to later deposits as well, it adds up slowly. That has not been confirmed in a form I can point to, so do not count on it.

Whatever the bonus is worth, the house edge in case opening works against you over time. A few dollars of extra credit does not change that.

Mistakes I see, and habits worth keeping

Most problems come from rushing. These are the ones I would avoid.

Registering first and hunting for the code later. The code belongs at sign-up. Do it in the right order.
Expecting the cases with no deposit. The published description ties them to a successful deposit.
Mixing up codes. The codes posted on the X account are for one-claim promos and races, not the signup reward. Use BONUS for this offer only.
Chasing a bonus with a bigger deposit. Five percent of any amount is still a small number.
Ignoring the clock. Races and one-claim promos are timed. The United States spans several zones: Eastern, Central, Mountain and Pacific, plus Alaska and Hawaii. Convert any posted time to your own before assuming you are on time.

Now the serious part. Case opening is for adults only. Depending on your state and the product, the minimum age may be 18 or 21, so check which applies to you. Set your budget before you deposit, not after a bad run. If gambling stops feeling like fun, call or text the National Problem Gambling Helpline at 1-800-MY-RESET (1-800-697-3738), free and open 24/7. The older number, 1-800-522-4700, still works, and Gamblers Anonymous runs peer support groups.

FAQ

These are the questions I get most from friends who watch CS2 and want to try the site.

Can I withdraw the bonus straight away?

I can't confirm that. Withdrawal conditions for the free cases and the 5% bonus are not published in a form I can quote, so read the terms on the deposit screen and in your account before assuming anything.

Where exactly do I enter the code?

Enter BONUS during registration, in the field meant for a referral or affiliate code. Do it before you finish creating the account.

Do I need to make a deposit to get the bonus?

Very likely, yes. The rewards description ties the 3 extra cases and the deposit bonus to a successful deposit, so plan on depositing first. Check the deposit screen for the current terms.

How old do I have to be to play on Rain.gg from the United States?

It depends on your state and the product. The minimum age is typically 21 for casinos and most sports betting, and 18 for some lotteries and other forms. Check your state's rules and Rain.gg's own requirements before you sign up.

Is the code BONUS only for new players?

It is entered at registration, so it looks aimed at new accounts. I have no confirmed way to add it to an existing account, so assume it is for new sign-ups unless the site says otherwise.