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Big Joker is a 5-reel, 5-line video slot from Casino Technology with a fruit-machine layout and joker theme. The game uses a 5x3 grid, with wins paid left to right from the first reel. The RTP is listed at 95.2%, and the bet range runs from 0.05 to 5.
The symbol set includes classic fruits such as cherries, grapes, apples, lemons, oranges and watermelons, alongside a joker Wild and a star Scatter. The Wild can substitute for other symbols to complete winning lines, while the Scatter pays in any position. The game page and help screens also show the standard controls, including spin, autoplay, balance, win and line selection.
A demo version is available so players can play for free and practice before playing for real money. Big Joker also includes a Double Up gamble feature after a win, allowing card-based risk options with red-or-black and suit guesses, plus a half-gamble choice. The feature can increase winnings, but a wrong guess loses the stake used in the gamble round.
