Developer 
4 Carts Bonanza: Trinity Series™ by Future Gaming Solutions is a mining-themed video slot set on a five-reel, three-row grid with 10 fixed paylines. The game uses coloured Diamond symbols, a miner Wild, and standard card symbols, with wins paid from left to right. Its layout also shows jackpot tiers for Mini, Minor, Major, and Grand prizes.
The main feature is built around Diamond collection into four treasure carts. Green, blue, and red Diamonds can trigger the Running Wins bonus game, which starts with three respins and resets whenever a new matching Diamond lands. Gold Diamonds activate the Running Wins Super Bonus Game, where each collected symbol can award one of the jackpot prizes. The paytable also lists a Lucky Riches feature, which can add symbols to help complete a bonus trigger.
This page presents the demo version, so players can play for free and practice before playing for real money. The interface includes a Bonus buy option, a Bonus Hunt mode, turbo play, and bet controls. According to the paytable, the game has a 96.15% RTP and a maximum win of 5,000x the bet.
