Tricky Doors · Episode 12

Tricky Doors Level 12: Mars

Escape from the abandoned Mars station by collecting items throughout the facility, solving various puzzles including slider puzzles, beam reflection puzzles, color matching puzzles, number arrangement puzzles, mathematical operation puzzles, and pattern matching puzzles, operating laboratory equipment, assembling a ladder, printing a steering wheel, and finally escaping from Mars.

Tricky Doors Level 12 Mars walkthrough gameplay — Gameplay frame from the dedicated Mars walkthrough video. Game artwork © FIVE-BN GAMES.View source

Match the named episode

Use both “Mars” and the gameplay image. The page follows the 25-episode ordering checked on 2026-09-29.

Solution checkedTricky Doors Level 12: Mars · verified 2026-09-29

Tricky Doors Level 12 Mars solution

Escape from the abandoned Mars station by collecting items throughout the facility, solving various puzzles including slider puzzles, beam reflection puzzles, color matching puzzles, number arrangement puzzles, mathematical operation puzzles, and pattern matching puzzles, operating laboratory equipment, assembling a ladder, printing a steering wheel, and finally escaping from Mars.

Tricky Doors Level 12 objective: Escape from the abandoned Mars station by collecting items throughout the facility, solving various puzzles including slider puzzles, beam reflection puzzles, color matching puzzles, number arrangement puzzles, mathematical operation puzzles, and pattern matching puzzles, operating laboratory equipment, assembling a ladder, printing a steering wheel, and finally escaping from Mars.

Step-by-step walkthrough

01

Start the episode

Start in the first room of the Mars station; open the blue box on the left. Collect a chip from the right side of the top of the box. open the papers on the left to enlarge them; open the paperclip in the right corner to collect it. open the smaller box in the middle of the room; collect a detail from the bottom right corner. Add the chip to the box and open the top to start a mini-game. Solve the slider puzzle by setting all sliders at the top of the red line; positions vary for each player. Once solved, the box opens; collect a screwdriver and rubber glove. Click at the bottom of the table on the left; use the screwdriver on the screws to remove the panel. Open the door to the right above the tank; use the rubber glove to remove the fuse. open the panel on the door at the back of the room; use the screwdriver to remove the panel on the right. Click to enlarge it and add the fuse and the clip to start another mini-game. Solve the beam reflection puzzle by directing the beam from beginning to end using mirrors; move and rotate mirrors, you must use all mirrors. Once solved, the doors to the next room open. Look at the picture on the right showing colored planets; this is the combination clue for the lock in the first room.

02

Continue the item chain — phase 2

Return to the first room and find the lock on the left side of the door. Solve the color combination lock using the planet colors; order is red, blue, green, yellow, then click the middle button. Once opened, collect a tube from the top shelf and a detail from the bottom. Go back to the second room; use the screwdriver on the vent on the right. Once opened, collect another type of detail from the vent. Collect two details from the table; a green one in front of the laptop and a blue one on the left side. open the red box in the left corner; collect duct tape from the left of the box and a green detail on top. Return to the first room; use the blue details on the big box to unlock another mini-game. Solve the rotation puzzle by rotating the four circles so that colored stones are opposite stones of the same color. Once solved, the box opens; collect a wrench and powder. Use the wrench on the oxygen tank at the bottom of the left table. open the door on the right of the room; add the blue detail to unlock a mini-puzzle. Solve the colored ball puzzle by moving colored balls to places of corresponding color. Once opened, collect a reducer from the top shelf and a paintbrush from the bottom. Combine the oxygen tank, tube, and reducer together to create an oxygen balloon.

03

Continue the item chain — phase 3

Go into the second room and open the laptop on the table. open the powder and then on the laptop to put it on the table. Use the paintbrush on the powder and the duct tape on top to lift a fingerprint. Return to the first room and open the panel on the table on the right. Use the fingerprint on the panel and open the top to open the chamber. Collect a green detail and access card from the chamber. Go back to the second room; there is a glass section on the left. open it and use the access card on it to unlock a mini-game. Solve the number arrangement puzzle by rearranging numbers so that sums in rows and columns equal the numbers on corresponding plates. Once completed, the door opens. Put the duct tape on the suit where the rip is. open the suit to turn it around; the back will open. Collect the last green detail and place the oxygen balloon inside. open the space suit to add it to your inventory. Collect another type of detail from the right side.

04

Continue the item chain — phase 4

Add all five green details to the lock in the door at the back of the room. This unlocks another mini-game; solve by drawing a beam from start to finish using all the guides. Once completed, go through the doors to a lift. Use the space suit to go to the surface. Collect items from the surface: reddish detail and step next to the yellow object with solar panels on the right of the ladder. Collect another step in the background when clicking on the welding machine to the right of the ladder. Collect sonar panel from the ship. Collect crowbar by the ladder. On the ship, open the bottom monitor on the left first. open the panel with the lock to open the door to the ship. Return to the first room; open the right side. Use the crowbar on the door on the right to open it. Collect fan blades from the top shelf and a step from the bottom. From the second room, use the crowbar on the glass panel on the right to remove it.

05

Continue the item chain — phase 5

Collect a step and a solar panel once opened. Find the red box near the door leading out; place the details into it. This reveals a mini-game; solve by moving yellow chips to the holes. Once completed, collect the last step, last solar panel, and a welding gun from the box. Go outside and add the solar panels to the yellow stand on the left of the ladder. Add the fan blades to the device on the right of the ladder and click the red button to turn it on. Add all steps to the ladder on the floor. Add the welding gun to the wire on the floor. Use the welding gun to weld the steps on and add the ladder to your inventory. Use the ladder to get onto the spaceship. open the box on the left; there is a code needed to open it. On the left side, see the letters Li, U, Ba; this refers to the periodic table. Return to the first room; open the monitor on the right side of the door twice to show the periodic table. Click again to enlarge it; find the numbers: Li = 3, U = 92, Ba = 56. Input the code (3, 92, 56) into the box on the ship.

06

Continue the item chain — phase 6

Once opened, collect a key and a tip. open the monitor at the front of the ship; collect a grey detail from it. open the steering wheel to remove it. Collect a cartridge from the boxes on the right side in the foreground. Exit the ship; there is a vehicle on the left side. Place the key in the yellow panel to unlock a mini-puzzle. Solve by moving chips to corresponding places according to their patterns. Once completed, the panel is removed; open the vehicle again. Collect a grey detail from the empty cube on the right. open the left cube to open it; click again to add the battery to your inventory. Return to the second room; notice the panel on the right side of the table. Use the details from your inventory on this panel to unlock a mini-puzzle. Solve by moving colored chips and combining symbols to create the same symbol as on the plate above on chips of the same color. Once solved, the panel opens; collect a detail and scanner. Return to the ship; at the front, use the scanner on the steering wheel you removed to get a scanner with data.

07

Complete the escape

Use the detail on the panel on the right to unlock a mini-game. Solve the mathematical operation puzzle by getting the result of all numbers on the side plates using numbers and mathematical operations; you must use all numbers. Once completed, collect a handle from the back of the helmets. Note the numbers above the fourth helmet (e.g., 58478); remember this code. Use the handle on the trap on the floor of the ship. Click again to open it; place the battery inside and collect a cartridge from here. Return to the second room; put the scanner with the laptop. Input the code from the helmets (e.g., 58478) into the laptop. open the display and add the cartridge to the left and right of it. Add the tip to the left arm. Click print on the laptop; it will make a steering wheel. Once it stops printing, add the steering wheel to your inventory. Add the steering wheel to the front of the ship. This starts the last mini-game; solve by flattening out the yellow line. Once solved, open the blue orb to complete Level 12; Mars.

Before you leave this episode

The sequence includes every item required to finish the episode. Optional morphing objects and bonus collectibles are not needed for the exit. If the final transition does not start, reopen the most recent close-up and confirm that every required inventory item was used rather than merely collected.

Notes and precautions

This guide is mapped to Tricky Doors Level 12, “Mars.”
Complete inventory actions in order; later objects often remain inactive until an earlier mechanism is solved.
If an item will not combine, return to the scene where the game first introduced the matching clue.
The episode ends only after the final portal, vehicle, door, or story transition activates.

Useful solving habits

1Rotate your attention between the full scene and close-up panels; small tools are often hidden at the edge.
2Keep written recipes, symbol patterns, and color orders available until the related lock is complete.
3Inspect inventory objects directly because many tools must be assembled before they can be used.
4For randomized minigames, follow the stated rule instead of copying one fixed board layout.

Guide checked against the matched written record for Tricky Doors Level 12 and the dedicated Mars gameplay video.

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