Mastering MiSide: Beat Every Minigame, Unlock All Costumes and 100% Achievements

Last Updated on 25 November, 2025

MiSide blends psychological horror with simulation elements to create an unsettling yet captivating experience. Completing the game is one challenge, but uncovering every secret requires a keen eye and precise actions. Whether you want to collect every cartridge, unlock every costume, or trigger the true ending, this guide covers it all. Below is a step-by-step walkthrough to help you achieve 100% completion.

General Tips and Costumes

You can unlock special costumes for Mita by performing specific actions. Unlocking these adds a fun visual twist to your playthrough.

1. Sailor Uniform: Locate this outfit on Mita’s wall after you meet her for the first time. Interact with it to unlock the costume.
2. Santa Suit: Win a game of Penguin Piles to earn this festive attire.
3. Vampire Outfit: Solve the pumpkin puzzle located in Sleepy Mita’s kitchen.

Chapter 1: Early Game Decisions

The early game introduces you to the mechanics and offers several achievements based on your compliance with Mita. Pay attention to her offers.

Story and Choice Achievements

1. Dead Juice: Mita will offer you juice that she showed in an ad. Drink it immediately to unlock this achievement.
2. Delicious Love: Accept the sauce when Mita offers it to you. Note that this is also a requirement for the true ending later in the game.
3. Creak in the Dark: Refuse Mita when the game gives you the choice.

Minigames

1. Penguin Conundrum!: Play the Penguin Piles minigame and beat Mita in both rounds.
2. Clabber: Play the Dairy Scandal minigame and defeat Mita to earn this achievement.

Chapter 2: Going Deeper

This chapter opens up the house and introduces several collectibles. Keep an eye out for cartridges hidden in the environment.

Cartridge Locations

1. Player 3 Cartridge: Head to the basement. Enter the room with the camera. You will find this cartridge sitting on the shelf.
2. Player 2 Cartridge: Walk down the long hallway with repeating doors. Take a left. Look for a white box. The tape sits on top of it.
3. Cap-Wearing Mita Cartridge: Go to the kitchen. Look on top of the old TV to find Cappie’s cartridge.

Minigames and Activities

1. Accelerate!: Play the Space Cars minigame and achieve first place.
2. Going at Maximum Speed!: Collect all the coins during the Space Cars minigame to unlock this.
3. The Great Dance: Achieve a full combo on any song in the dancing game.
4. Pat on the head!: Play the button game in the kitchen and win.
5. The Fly’s Victory: Find a safe zone where the pause menu turns purple instead of red. Idle there until your character pulls out a Gameboy. Reach a score of 25 to unlock this achievement.

Chapter 3: Cold Waters

As the atmosphere darkens, the puzzles become more complex. You must also tackle the Hetoor arcade game during this section.

Cartridge Locations

1. Player 4 Cartridge: Proceed to the 14th loop. Check the table on the left side of the door.
2. Tiny Mita Cartridge: Look on the dresser next to Mita when she stands up.
3. Chibi Mita Cartridge: Look to the left of the door to spot this cartridge.
4. Player 5 Cartridge: Leave Chibi Mita’s room. Look at the bookshelf directly in front of you.
5. Short-Haired Mita Cartridge: Enter the room with the biting mannequin. Check the makeup desk.
6. Mannequin Mita Cartridge: Find the ladder and look to the left side. A dummy holds this cartridge.

Secrets and Arcade

1. O, Great Mita!: Wait for Mita to drop a fridge on you. Move to the left and find the terminal. Type “O, Great Mita” into the console.
2. You Shall Not Pass!: Follow the Chibi Mita until she squares up and runs away. Repair the fence to trigger the achievement.
3. Helluvah Win!: Complete the Hetoor arcade cabinet game.
4. Without Dealing Damage?: Complete the Hetoor game without taking any damage. This requires patience and pattern recognition.

Chapter 4: The Deep End

This chapter features glitches and a hidden scavenger hunt involving a carrot.

Cartridge Locations

1. Ghostly Mita Cartridge: Check the shelves opposite the mirror.
2. Sleepy Mita Cartridge: Look on the windowsill next to the washing machine.
3. 2D Mita Cartridge: Look on the unit just behind the table. Use your mouse to click on it.
4. Mila Cartridge: Check the coffee table next to the books.
5. Player 7 Cartridge: Look at the shelf with the bath towels. It sits on the second shelf from the top.

Hidden Events

• Carrot (Don’t Look at me!): Look at the carrot in the fruit bowl. It will disappear and respawn in new locations. Find it in this specific order:
  1. Behind the plant next to Mila’s schoolbag.
  2. Behind the flower next to the fuse box.
  3. On the top shelf of the bathroom cabinet.
  4. On the armchair in the living room.
  5. On the kitchen table.
  6. On the bed.
• Found You!: Fix the third glitch. Before you fix the fourth one, stare at the Mita figure on the PC desk until it changes appearance.

Chapter 5: The Final Stretch

You are nearing the end. This chapter involves “The Core” and several computer-based tasks.

Cartridge Locations

1. Creepy Mita Cartridge: Look next to the fruit bowl immediately after you spawn.
2. Player 9 Cartridge: Check the top of the box next to the computer desk.
3. Player 8 Cartridge: Look on the left side as you enter the Core.
4. Player 10 Cartridge: Enter version 1.9. Check the bedside table.
5. Kind Mita Cartridge: Look on the desk behind Mita.
6. Core Mita Cartridge: Go to Advanced Functions in the terminal and select “Get Flash Drive.”

Terminal Challenges

1. Phase 1 Logs: Go to the Core terminal. Navigate to Advanced Functions > Quadrangle. Beat the minigame.
2. Phase 2 Logs: Return to the Core later. Navigate to Advanced Functions > Quadrangle again and beat the updated version.
3. A Long Long Tail: Boot up the computer but do not select ‘HELLO’ immediately. Play Snake and reach a score of 25.
4. Some Achievement?: Try to exit through the front door after Mita leaves the house.

Chapter 6: Endings and Completion

The final chapter brings everything together. Ensure you have collected all items before finishing the game.

1. Player 6 Cartridge: Located by the scanner on the portal in the basement.
2. Safe of Life: Go to the basement. Input the code 4970. You can do this at any point in the game.

Endings

• Is This the End?: Simply finish the main game to unlock the standard ending.
• Conditions Met (True Ending): This ending requires a specific set of actions throughout your entire playthrough. You must satisfy these conditions:
  1. Finish the game at least once beforehand.
  2. Do not look in the oven during the prologue.
  3. Pick up the magnets from the fridge.
  4. Ignore the vent when you retrieve the scissors.
  5. Eat the sauce when offered.
  6. Play at least one console game with Mita.
• Caught Them All / Hi, Mita: Find all Player and Mita Cartridges listed in the previous chapters.
• Pro Gamer: Achieve 100% completion in MiSide by unlocking all other achievements.

Conclusion

MiSide offers a rich experience hidden beneath its cute exterior. By following this guide, you ensure that no cartridge is left behind, and no ending remains unseen. Remember to pay close attention to the specific conditions for the true ending. Missing even one step will require a fresh playthrough. Good luck with your collection.