Super Upgrade Joker
Prospect Gaming
Super Upgrade Joker is a classic-themed slot by Prospect Gaming.
It features a 3x3 reel setup with 5 paylines, which expands to 3x5 during the Hold & Win bonus round.
It offers a maximum win of 5,500x stake, driven by Hold & Win, Collector Symbols, and Fixed Jackpots.
Specifications
Characteristic
PREVIEW
User Rating
-
Free Spin
Preview
Jackpot
None
Reel Config
Changeable Reels
Paylines
5 Lines
RTP
95.15%
Volatility
-
Max Win
5,500x
Bonus Buy
-
Demo Play
Super Upgrade Joker by Prospect Gaming
Super Upgrade Joker by Prospect Gaming
Feature Highlight: Hold and Respin
Hold and Respin, or 'Hold & Win', is one of the most popular core bonus game mechanics in modern slots. The essence of this feature, unlike traditional free spins, is to 'Hold' bonus symbols on the reels and 'Respin' the remaining empty spaces to fill up the screen. This system was popularized worldwide through 'Money Train 2's' 'Money Cart Bonus' and is the foundation for numerous developer-specific brand features like Wazdan's 'Hold the Jackpot™' and Playtech's 'Fire Blaze™'.
Feature Highlight: Symbol Collector
A Symbol Collector is a powerful special symbol that primarily appears in bonus rounds like 'Hold and Respin'. Its sole function is to 'collect' the values of other cash value symbols (like coins) on the screen and absorb them into its own value. It goes beyond simply adding values, playing the role of consolidating scattered small values into one massive value to exponentially amplify the potential of the bonus round.
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About Previews
Previews focus on playable demo access, slot specifications, and feature structure before a full 300SPINS™ review is available. They are designed to make the slot easy to inspect and compare, while leaving performance judgments based on actual play sessions to full 300SPINS™ reviews.