Push Gaming is a London and Malta-based slot developer founded around 2010. The studio made its name with Jammin' Jars — an 8×8 grid cascade slot with cluster pays and the Rainbow Burst Wild mechanic — and extended its portfolio to extreme volatility with Fat Banker (50,000x) and Razor Shark. Push Gaming holds MGA and UKGC licences and distributes through Relax Gaming's aggregator platform.
Push Gaming — UK Developer Behind Jammin' Jars
Push Gaming was founded approximately 2010 in London, later establishing Malta licensing. The London origin gives the studio a UK market sensibility — games designed with European premium aesthetics rather than Asian-market or American-arcade influences. MGA and UKGC licences provide access to the UK and EU regulated markets.
The Jammin' Jars launch in 2018 established Push Gaming's signature format. The game became a streaming hit through its visual spectacle — the Rainbow Burst Wild (a rainbow-coloured jar that bounces around the grid leaving Wilds) creates dramatic animated sequences that film well in streaming content. Jammin' Jars 2 (2021) refined the formula with increased max win (20,000x) and enhanced Wild interactions.
Jammin' Jars — The Grid Cascade Mechanic
Jammin' Jars operates on an 8×8 grid rather than traditional reels. Matching fruit symbols on adjacent positions (horizontally or vertically) trigger cluster wins. Winning symbols are removed (cascade), new symbols fall from above, and further clusters extend the win sequence.
The Rainbow Burst Wild is Jammin' Jars' defining feature: a jar symbol containing a rainbow expands when part of a winning cluster, bouncing around the grid and leaving standard Wild symbols behind. Progressive multipliers apply to each consecutive cascade in a sequence — ×2, ×3, ×4... The multiplier resets to ×1 at the start of each new spin. Free spins activate the multiplier from a higher starting point.
RTP: 96.83%. Max win: 20,000x (Jammin' Jars 2). Volatility: very high despite the frequent small cluster wins — the max win potential concentrates in the infrequent high-multiplier cascade sequences during free spins.
Fat Banker, Fat Santa and the Fat Series
Push Gaming's Fat series occupies a different format from the grid mechanics of Jammin' Jars. Fat Banker uses a 40-payline reel layout with a progressive multiplier "Bank" system — coin symbols accumulate into a bank during the base game, which pays out in a bonus round. Max win: 50,000x.
Fat Santa (Christmas seasonal variant) applies the same bank mechanic to a Christmas theme. Both Fat series titles represent Push Gaming's expansion beyond the cluster-pays grid into a more conventional reel structure with extreme multiplier potential, expanding the studio's reach to players who prefer traditional payline slots.
Razor Shark — The Experienced Player's Favourite
Razor Shark (2019) has an underwater shark theme and Push Gaming's "Push" mechanic: shark symbol nudges on the reel, potentially revealing multiplier values hidden beneath the ocean floor symbols. A nudging Wild that uncovers a ×15 multiplier on a high-value payline creates the game's high-end outcomes. Max win: 50,000x.
Razor Shark became a cult favourite among experienced players despite rarely being featured prominently in casino lobbies. The nuanced reveal mechanic rewards understanding of how the Push nudge system interacts with base game hits. Consistent player search volume years after launch indicates a loyal returning player base.
Frequently Asked Questions
Who makes Jammin' Jars?
Jammin' Jars was developed by Push Gaming, a London and Malta-based slot developer founded approximately 2010. Push Gaming holds MGA and UKGC licences.
What is the difference between Jammin' Jars and Jammin' Jars 2?
Jammin' Jars 2 (2021) increased the max win from the original's 10,000x to 20,000x and enhanced the Rainbow Burst Wild interactions. The core 8×8 grid cluster cascade mechanic is the same in both versions.
What is Razor Shark's max win?
Razor Shark has a maximum win of 50,000x bet. This is achieved via the Push mechanic revealing high-value multipliers beneath symbols during a high-value payline hit. RTP is 96.69%.
Is Push Gaming part of a larger group?
Push Gaming is privately owned and independent. However, its games are distributed through Relax Gaming's aggregator platform, which Kindred Group (Unibet parent) owns. This means Push Gaming titles appear in Relax's casino API integrations alongside Hacksaw Gaming and other studios.
