Combo Seven

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Rules and Gameplay

The Combo Seven slot by Onlyplay offers a thrilling classic slot experience with a modern twist. Players engage with a 3×3 reel setup and 5 win lines, aiming for high-value combinations primarily composed of the lucky number seven. The betting range starts at $1 per spin, catering to high rollers with options up to $50 per spin. With medium volatility and an RTP of 95.16%, the game promises a balanced blend of risk and reward. The gameplay is straightforward, focusing on spinning the reels to match symbols across the paylines, with a hit rate of 20.4% suggesting wins occur in roughly 1 out of every 5 spins.

Bonus Features

Combo Seven enriches the classic slot experience with enticing bonus features, including:

  • Free Spins: Triggered by landing 3 scatter symbols anywhere on the reels, awarding 10 Free Spins. This feature mirrors the base game, with retriggering not possible.
  • Jackpots: The game offers three fixed jackpots – Mini, Major, and Grand. These are won through full screens of matching seven symbols in different colors:
    • Green 7’s for the Mini jackpot of 25x the bet.
    • Red 7’s for the Major jackpot of 100x the bet.
    • Orange 7’s for the Grand jackpot of 1,000x the bet.

These features add layers of excitement and potential for big wins, making every spin a chance to hit it big.


The symbols in Combo Seven are an ode to classic slot machines, with a focus on various colored lucky sevens. Each symbol carries its unique payout potential:

  • Eight symbols of lucky 7’s in different colors
  • Values range from 0.5x to 50x the stake
  • Scatter symbols trigger the Free Spins feature

Despite its simplicity, the game does not feature Wild symbols, focusing instead on the pure charm of sevens and the excitement of its jackpot and free spins features.


The game features 5 paylines on its 3×3 reel grid, offering players multiple ways to win by lining up the coveted seven symbols across the reels. The straightforward payline structure makes it easy for players to understand winning combinations, enhancing the classic slot experience with a modern twist.

Pros & Cons

Pros Cons
High production values with sharp graphics and animations Lower-than-average RTP at 95.16%
Three fixed jackpots (Mini, Major, Grand) Limited features with no Wild symbols
Engaging funky soundtrack enhancing gameplay High minimum bet of $1 may not suit low-stake players

Minimum and Maximum Bet

The betting range in Combo Seven is designed to cater to a wide audience, starting from a minimum bet of $1 per spin, which may be slightly higher than some players are used to. The maximum bet is set at $50 per spin, making the game appealing to high rollers looking for bigger stakes and potentially larger wins.

Game Jackpot

Combo Seven features three fixed jackpots: Mini, Major, and Grand, offering players significant winning potential beyond regular line wins. The RTP of the game is set at 95.16%, which is slightly below the industry average. With medium volatility, players can expect a balanced mix of winning frequencies and payout sizes, making the game suitable for a wide range of playing styles.

About Provider

Onlyplay, established in 2007, is renowned for its focus on instant win games and innovative gaming solutions. The developer boasts a diverse catalog of games popular worldwide, along with a strong commitment to high-quality graphics and engaging gameplay. Onlyplay’s offerings extend beyond slots to include a comprehensive RNG platform and a high-performance B2B service, highlighting their role as a versatile and influential player in the online gaming industry.

How To Play

  • Select your bet size: Choose between the minimum of $1 and the maximum of $50 per spin.
  • Understand the paylines: Familiarize yourself with the 5 paylines available in the game to maximize your winning potential.
  • Spin the reels: Initiate a spin and watch for combinations of the lucky seven symbols across the reels.
  • Aim for jackpots: Collect matching sevens to trigger one of the three fixed jackpots for larger wins.
  • Trigger Free Spins: Land three scatter symbols anywhere on the reels to enjoy 10 Free Spins, with the chance to accumulate wins without additional bets.


Combo Seven by Onlyplay refreshes the classic slot game format with its high-quality graphics, engaging soundtracks, and the addition of three fixed jackpots, making it an appealing choice for players looking for a blend of traditional and modern slot experiences. Despite its lower-than-average RTP and the absence of Wild symbols, the game’s unique features and potential for significant payouts offer a compelling reason to spin the reels. Onlyplay’s dedication to innovation and quality shines through in Combo Seven, making it a must-try for fans of slot games.