VanisKey the game takes place in a world where everything is slowly disappearing. You play as a character trapped in this space and must solve complex puzzles to stop this disappearance and save the world before it completely disappears from sight. You must find a way to restore the world by solving puzzles, searching for clues. Each level consists of 3 puzzles that appear with 3 symbols, choose each symbol to go into solving the puzzle. The first puzzle is to find the correct key among the keys that appear on the screen to open the old lock, each key has its own design and material, at the beginning of the game there will be an introduction about the description, context and Hint used for choosing the correct key in the game, each time you choose the wrong key you will lose a life (blue ink drop icon), when you run out of 3 lives the player will lose this puzzle and can play again, if you choose the correct key, you will be rewarded with Crystals and collect 1 key of this game, in this game you will be allowed to use the support item Fading Key Purge (Support to remove 1 incorrect key). In the second puzzle, the player needs to adjust the brightness of the oil lamp by holding down and dragging the knob next to it to the left/right. When the brightness reaches the required level, a 3-second countdown will appear on the screen. Fix this brightness to win and be rewarded with a Crystal along with a key to this puzzle. With puzzle 3, in the laboratory there is a sample bottle, an empty bottle in the middle and monochrome liquid bottles below. The player needs to rely on the color of the sample liquid bottle to mix a similar colored substance into the large bottle by holding down the monochrome bottles to fill the large bottle. In this puzzle, the Reveal Color Ratio support item can be used (When activated, it will automatically add or adjust a color with the correct ratio to the large bottle). When mixing incorrectly, you can press the Reset button to mix again. Mixing the exact color as the sample bottle will be rewarded with a Crystal and a key to this puzzle. When collecting all 3 keys of 3 puzzles (each puzzle can only receive 1 key in each play) will win the overall level of that level. The game consists of 3 levels from Easy, Medium to Hard, the harder the level, the harder the puzzle to solve (puzzle 1 will add more keys, puzzle 2 knobs, brightness will be harder to adjust, puzzle 3 will add more bottles of different colors) and the time to solve all 3 puzzles is also shorter, if the time runs out without solving 3 puzzles, the level will be lost. In addition, there is an item that can be used in the puzzle selection screen and while solving all 3 puzzles called Time Extend (Activating will add 15s to the total time). Use Crystals to buy support items at the Shop. The Ranking screen will display the player's level completion ranking based on time.