Merge Gangster Heist VI is a merge-style simulation game that focuses on a crew of robbers who commit bank heists. The player can only pull off each heist if they have the right people. They create a team by merging characters on a grid at a hideout.
The player uses cash from each heist to generate base characters. They then combine two identical ones to create a new character who has better health and weaponry. They can track unlocked crew members in an area labeled Cards on the home screen.
When the player is ready to perform a heist, their current crew drives a van to the local bank. The player then directs the characters to money cards on the ground to steal cash from open shelves in a vault, unlock a safe, and perform other actions.
The player can unlock or pay for special powerups that help them, including a sniper that fires shots from a vantage point near the bank, armor for one character, and a hacker that can help the crew enter the bank faster. At the end of a heist, the characters fight the police.
Merge Gangster Heist VI allows the player to use their cash to upgrade their escape vehicle in a Vans area. They must use gems that they earn by watching ads to buy special characters and money packs at the Shop. If they run out of cash, they can earn more by watching ads.