How free spins work and where to use them
Mars Casino Bonuses Overview
Welcome bonus: Mars Casino runs a first-deposit match that pays out as a 100% bonus up to $300, with a minimum deposit of $20. The bonus comes with a 35x wagering requirement, and the maximum bet while clearing it is capped at $5 per spin. Bonus funds stay active for 7 days, and withdrawals are limited to $2,000 until wagering is completed.
Free spins: New players also get 100 free spins on Starburst after the first deposit, credited in bundles of 20 per day for 5 days. Winnings from free spins convert to bonus funds with a 35x wagering requirement, and free spins expire 72 hours after each batch is issued. Mars Casino also rotates short promos, such as “Weekend Reload” (50% up to $100 on Friday–Sunday) and a slot tournament with a $5,000 prize pool based on total points from real-money spins.
Cashback and promos: The casino offers weekly cashback at 10% of net losses, paid every Monday on losses from the previous week, with a $10 minimum cashback and a $200 cap. Cashback is credited as bonus money with 10x wagering and a 3-day validity window. Ongoing promos include seasonal deposit codes, limited-time boosted free spins on selected slots, and periodic leaderboard races where prizes are paid as cash or bonus balance depending on the promo rules.
Wagering (Playthrough) Requirements At Mars Casino
A wagering requirement is the number of times you must bet the bonus amount (sometimes the bonus plus your deposit) before you can withdraw any winnings linked to that bonus. Mars Casino calculates it as a multiplier, for example 35×, and only real-money bets placed after claiming the bonus count toward clearing it.
- Example 1 (bonus-only wagering): You claim a $50 bonus with a 30× wagering requirement on the bonus. You must place $1,500 in qualifying bets ($50 × 30) before the bonus-related winnings become withdrawable.
- Example 2 (deposit + bonus wagering): You deposit $100 and receive a $100 bonus with a 25× wagering requirement on deposit + bonus. The wagering target is $5,000 (($100 + $100) × 25). If slots contribute 100% and roulette contributes 10%, then $200 in slot bets adds $200 to progress, while $200 in roulette bets adds $20.
What Promo Codes Are
A promo code is a short text code you enter in Mars Casino to unlock a specific offer, such as a deposit bonus, free spins, or cashback. Each code is tied to fixed terms: an expiry date, eligible games, and a minimum deposit. Mars Casino applies one code per claim, so a second code won’t stack on the same deposit.
Where To Find Them
Mars Casino publishes promo codes in its email newsletters, in-account messages, and the Promotions page inside your profile. Affiliate partners and streamer campaigns also distribute time-limited codes, and those typically work only for new accounts or for players in a listed country. If a code is shared in a screenshot, copy it exactly: codes are case-sensitive and spaces count.
How To Activate
Log in to Mars Casino, open the cashier, and choose your payment method. Enter the promo code in the field labeled Promo code before you confirm the deposit, then submit the payment. If the bonus is deposit-based, the system attaches it to that transaction; if it’s a free-spins code, you’ll see the spins added under Bonuses or in the game lobby that the code targets.
If the code fails, Mars Casino blocks it for one of these reasons: the code expired, you already used it, your deposit is below the minimum, or the code is restricted to a specific game or account type. Fix the mismatch and try again with a new deposit; the casino won’t retroactively apply a code to a completed transaction.
Examples Of Promo Codes (Fictional)
| Promo code | Offer | Example condition |
|---|---|---|
| MARSWELCOME50 | 50% deposit bonus up to $100 | Minimum deposit $20, valid for first deposit |
| REDPLANET20 | 20 free spins on a selected slot | Deposit $15, spins credited within 5 minutes |
First Deposit Match 100% Up To $200
Mars Casino matches your first deposit and adds the bonus to your cash balance as bonus funds.
- Deposit: Minimum $20. Bonus equals 100% of the deposit, capped at $200.
- Wager: 35x bonus amount. Slot stakes count 100%; table games count 10%. Maximum bet while wagering: $5 per spin/hand.
- Term: Claim within 7 days of registration. Wagering must be completed within 14 days of activation.
Weekend Cashback 10% (Slots Only)
Mars Casino returns part of your net slot losses from Friday to Sunday as bonus funds.
- Deposit: Minimum $30 deposit during the weekend period to qualify.
- Wager: 10x cashback amount. Cashback credited on Monday 12:00 UTC. Maximum cashback: $100 per weekend.
- Term: Weekend period runs Fri 00:00 UTC to Sun 23:59 UTC. Cashback wagering expires 7 days after credit.
Midweek Reload 50% Up To $100
Mars Casino offers a reload bonus for one deposit made Tuesday through Thursday.
- Deposit: One eligible deposit between Tue 00:00 UTC and Thu 23:59 UTC. Minimum $25. Bonus equals 50% of the deposit, capped at $100.
- Wager: 30x bonus amount. Slot stakes count 100%; roulette and blackjack count 10%. Maximum bet while wagering: $5.
- Term: Bonus must be claimed within the Tue–Thu window. Wagering must be completed within 10 days of activation.