Thunder Coins XXL: Hold and Win Slot

Thunder coins XXL is a 3-reel 5 row slot from Playson with 15 active pay lines. The game can be played from a minimum bet of 20 cents and you only get paid for connections of 3 of a kind. 777 is the wild symbol and pays 30x your bet on connections of three. There are 5 other symbols and these pay from 10x to 0.5x your bet on winning connections. The main feature of the game are coins which appear on reel 1 and 3 and thunder coins which appear on reel 2. The coins value ranges from 1x to 8x your bet and the value of these coins are only awarded to you if there is at least one thunder coin symbol on reel two. You can have a maximum of 5 thunder coins and these 5 thunder coins will collect all visible coin values. Every bonus and thunder coin that lands during the base game get collected by the logo of the slot and this feature is called the pile of gold. On any random spin the coins from this logo will be unleashed to the slot grid and reward you with the bonus.
You can trigger the bonus by landing one coin each on reel 1 and three provided you have one thunder coin on reel 2 as well. You will get 3 re-spins and your goal is to land at least one coin in these spins. Not landing a coin ends your bonus. Before the bonus starts all coins are collected by thunder coin and there are no visible coins on the grid. During the game play as well every coin that lands are collected and then removed. You can land up to 5 thunder coins and every time a coin will land it will be collected by the all the thunder coins on reel 2. You can buy the bonus for a price of 70x your value and you will start with one thunder coin and buying the bonus for 200x your bet will give you 3 starting thunder coins. You can upgrade both features to the maximum potential.
It’s a medium volatility game but you should proceed with caution. The bonus lands every 90 to 100 spins but it doesn’t mean it good pay well every time. Don’t expect wins more than 20x in base game and 75x in bonus games.

I wish the base game was better as apart from the thunder coin feature nothing seems to pay. Even though there are 15 pay lines and you get stacked symbols wins are rare. Coin values end at 8x your bet and there is no chance to boost or multiply them in base or bonus game. The jackpot value for Grand is good at 1000x but really low for Major, Minor and Mini at 100x, 30x and 15x.