Vaultix is a tower defense and gold mining game. At the end of the basement, there's a gold mining machine that gives you a random amount of gold after a certain period of time. Gold thieves move from outside the tunnel into the basement, passing through the levels. Use the gold to buy and place traps, chainsaws, arrow launchers, and springs to stop them. The traps, chainsaws, springs, and arrow launchers have a limited number of uses; after the thieves pass through them many times, they lose their effectiveness and disappear. Defeating each thief earns you 1 gold and has a chance to drop a health potion. Allowing a thief to reach the mining machine will cost you all your gold and deduct 1 health point. Losing 5 health points means you lose the game. Accumulate enough gold to advance to the next level. There are a total of 5 levels, and the thieves' health and movement speed increase with each level. At the end of the game, you will receive a certain amount of diamonds which can be used to buy items such as healing for the mining machine, increasing gold mining speed, and immobilizing thieves for 4 seconds. Diamonds can also be used to upgrade the damage and durability of traps, chainsaws, springs, and arrow launchers.