Skip to content

Giveaways Store Bonuses

Mystery Jack slot: free demo, RTP and max win

A slot by Voltent

Mystery Jack is a Wazdan slot released in February 2013 at a 96.79% RTP with low-to-medium volatility and a max win capped at 710x the stake.

Studio Voltent 388 games on Velatonmies

Voltent, also known as Wazdan, is an iGaming provider that develops online slot games, table games, and video poker. Its game portfolio includes slot titles such as Power of Gods: Medusa and Larry the Leprechaun. The company integrates features like Volatility Levels™, Energy Saving Mode, and Hold the Jackpot™ into its games.

Player rating No player reviews yet Be the first to rate it

Tested by

Mystery Jack slot cover
40x deposit in 7 days, max €50 bet counted, slots 100% / live 20%

Player reviews of Mystery Jack

Scores come from signed-in members who have played the game, one review each, and every rating counts towards the average.

Review Mystery Jack

+20 points once published

+20points once publishedApproved submissions only. A rejected one earns nothing.

Your ratings
Gameplay & theme
Graphics & sound
Win frequency & payouts
Bonus rounds & free spins

Already a member? , it takes one click, and a published review earns points.

Where to play Mystery Jack in September 2026

The casinos at the top of our list right now, each one opened, funded and cashed out in our own testing.
New

Betpanda.io

4.0/5
Welcome offer 100% up to 1 BTC Bounty bonus: clear 40x first, paid as cash
Min deposit
€10 or crypto equivalent
Withdrawal
Instant to 5 min (crypto); on-chain confirmation adds 10-60 min
Play now Betpanda.io review
40x deposit in 7 days, max €50 bet counted, slots 100% / live 20%
1

Thunderpick

4.0/5
Welcome offer Esports bonus at 10x, casino bonus at 40x The two offers are not the same deal
Min deposit
€20 for the casino offer, about €19.30 for esports; card purchases from $50
Withdrawal
Instant, no internal fees
+1
Play now Thunderpick review
The esports welcome bonus carries 10x wagering on deposit plus bonus with a minimum deposit of about €19.30. The casino welcome bonus carries 40x wagering with a €20 minimum deposit. Thunderpick may apply a minimum 5x wagering on deposits where it suspects the account is being used to move funds rather than to play.
1

Roobet

4.0/5
Welcome offer RooWards rakeback with no wagering Ongoing rewards instead of a deposit match
Min deposit
No fixed minimum; promotions need about $10
Withdrawal
Crypto in about an hour
Play now Roobet review
RooWards is a rakeback programme paid on play volume and carries no wagering requirement. Where a welcome offer is available it runs at 40x wagering. Promotions generally require a deposit of about $10 equivalent.

Mystery Jack is a Wazdan slot released in February 2013 at a 96.79% RTP with low-to-medium volatility and a max win capped at 710x the stake.

More from this studio

Exclusive offer

Betpanda.io

100% up to 1 BTC

Bounty bonus: clear 40x first, paid as cash

  • 40x deposit, within 7 days wagering
  • min €10 or crypto equivalent
Play now Read review

40x deposit in 7 days, max €50 bet counted, slots 100% / live 20%