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RTP Zillard King by Red Tiger Gaming is a 5-reel slot with 30 paylines and a stated RTP of 95.67%. The game centres on the Zillard Wild feature, where Gold Coins can be collected to fill a progress bar and unlock three upgrades. In the demo version, players can play for free and study the feature set before playing for real money.
At 30, 60, and 90 Gold Coins, the Zillard Wild changes shape and behaviour: first becoming a stacked 1x4 symbol, then gaining a random multiplier, and finally turning sticky. Consecutive wins can increase the win multiplier up to x20. If a Zillard Wild lands without creating a win, Thunder Wilds may appear to guarantee a payout by substituting for paying symbols.
Once all upgrades are unlocked, the progress bar becomes a 6th reel that only allows high-paying symbols to land. Bet sizes run from 0.1 to 20, and the game is presented as a slot focused on symbol upgrades, wild mechanics, and conditional bonus-style features rather than free spins.
