Best Index Unknown alternatives: games like Index Unknown

3+ similar games compared and reviewed

4.6 avg rating
3 free games
Updated November 2026

Whether you want more options like Index Unknown or a completely different take on the same concept, our curated list of 3+ similar apps and games has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to Index Unknown

Seasons Puzzles | Mind Games#1

Seasons Puzzles | Mind Games by Saltuk Emre Gul

Brain Teasers & Tricky Puzzles
Editor's Choice
๐ŸŽฎ Games
4.8๐Ÿ˜Š(251 ratings)
FreeAdsIn-App Purchases
Seasons Puzzles | Mind Games screenshot 1
Seasons Puzzles | Mind Games screenshot 2
Seasons Puzzles | Mind Games screenshot 3
Seasons Puzzles | Mind Games screenshot 4
Seasons Puzzles | Mind Games screenshot 5
Seasons Puzzles | Mind Games screenshot 6

This brain game offers 100 unique riddles across four themed seasons, each with its own logic and design. Inspired by classic puzzles, it challenges your intelligence with a minimalist aesthetic. Hints and solutions are available through ads.

What We Love

  • ๐Ÿงฉ Well-designed, creative puzzles with good difficulty progression
  • ๐ŸŽจ Beautiful minimalist aesthetic and clean UI design
  • ๐Ÿ”‡ No forced ads, only optional ads for hints
  • ๐Ÿง  Engaging brain-teaser gameplay that requires creative thinking
  • ๐Ÿ˜Œ Relaxing and calming experience with pleasant music
  • โฑ๏ธ No time pressure or artificial constraints
  • ๐Ÿ’ฐ Free-to-play with no pay-to-win mechanics
  • ๐ŸŽฏ Good balance between challenge and accessibility
  • ๐Ÿ“ฑ Smooth gameplay with no bugs or glitches reported
  • ๐ŸŽญ Sophisticated, understated design approach

Room to Improve

  • ๐Ÿ› Ad system broken in Summer section and beyond
  • ๐Ÿ› Unskippable ads that play unexpectedly with sound
  • ๐Ÿ› Video ads for hints/solutions not working on iOS/Android
  • ๐Ÿ› App crashes force users to rewatch ads for same hint
  • โŒ No option to purchase ad-free version
  • ๐Ÿ“ Limited content - only 100 levels across 4 seasons
  • ๐ŸŽจ Poor color contrast in some puzzles (Winter triangle puzzle)
  • โ“ Some puzzle solutions are unintuitive or unclear
  • ๐Ÿ”„ Cannot replay individual levels without restarting entire game
  • ๐Ÿ“‹ No level selection menu to revisit specific puzzles
  • ๐Ÿค” Some puzzles have multiple valid solutions but only accept one
Chess Move - Stockfish Engine#2

Chess Move - Stockfish Engine by Setse LLC

Openings Trainer & Analysis
Strong Contender
๐ŸŽฎ Games
4.3๐Ÿ˜ž(1.1K ratings)
FreeIn-App Purchases
Chess Move - Stockfish Engine screenshot 1
Chess Move - Stockfish Engine screenshot 2
Chess Move - Stockfish Engine screenshot 3
Chess Move - Stockfish Engine screenshot 4
Chess Move - Stockfish Engine screenshot 5

This app helps chess players find the best moves using a powerful cloud-based engine. It allows users to set up board positions manually or via camera scan, and customize analysis depth and engine settings for in-depth game review.

What We Love

  • โญ Great app
  • ๐Ÿš€ Works well
  • ๐Ÿ‘ Easy to use
  • ๐Ÿง  Helpful for improving chess skills
  • ๐Ÿ† Allows beating difficult opponents

Room to Improve

  • ๐Ÿ’ฐ Expensive subscription
  • ๐Ÿ”’ Locked behind paywall
  • ๐Ÿ› Crashes and bugs
  • ๐Ÿ”„ Inconsistent performance after updates
  • ๐Ÿคฏ Confusing or misleading about free trial
Machinika Museum#3

Machinika Museum by Plug In Digital

Mystery puzzle game
Worth Considering
๐ŸŽฎ Games
4.7๐Ÿ˜Š(3.8K ratings)
FreeAdsIn-App Purchases
Machinika Museum screenshot 1
Machinika Museum screenshot 2
Machinika Museum screenshot 3
Machinika Museum screenshot 4
Machinika Museum screenshot 5
Machinika Museum screenshot 6

Explore and repair intricate alien machines in this mystery puzzle game. Use logic and observation to unravel a galaxy-spanning story. If you enjoy brain teasers and narrative-driven experiences, this game offers a unique challenge.

What We Love

  • ๐Ÿš€ Accrocheur
  • ๐Ÿ‘ Amazing Game
  • ๐Ÿ‘ Wonderfully difficult
  • ๐Ÿ‘ Very Nice
  • ๐Ÿ‘ Intรฉressant
  • ๐Ÿ‘ Awesome!
  • ๐Ÿ‘ One of my favourites!!
  • ๐Ÿ‘ Simple and Effective Investigative Puzzler!
  • ๐Ÿ‘ Really enjoyed this gameโ€”looking forward to game 2!
  • ๐Ÿ‘ Fun!
  • ๐Ÿ‘ Best puzzle game I ever played!
  • ๐Ÿ‘ Very Roomy
  • ๐Ÿ‘ Review
  • ๐Ÿ‘ Well done puzzle game
  • ๐Ÿ‘ Love it!
  • ๐Ÿ‘ Un bon divertissement
  • ๐Ÿ‘ Wonderful game - you'll want to savor this one
  • ๐Ÿ‘ Compelling game
  • ๐Ÿ‘ A lot like The Room series
  • ๐Ÿ‘ Fantastic!!
  • ๐Ÿ‘ Great game - let down ending
  • ๐Ÿ‘ Excellent puzzle game
  • ๐Ÿ‘ This was a great game.
  • ๐Ÿ‘ So far so good!!
  • ๐Ÿ‘ Bv
  • ๐Ÿ‘ NEXT GAME PLEASE
  • ๐Ÿ‘ Fabulous
  • ๐Ÿ‘ Great Job Guys!!
  • ๐Ÿ‘ Enjoyable Puzzler

Room to Improve

  • ๐Ÿ› Puzzles are very vague
  • ๐Ÿ› Need some hints!
  • ๐Ÿ› Disappointing for the price
  • ๐Ÿ› Chapter 7 is impossible to get past
  • ๐Ÿ› Disappointed
  • ๐Ÿ› Good game but have bugs
  • ๐Ÿ› Short chapter a bit easy
  • ๐Ÿ› Can't play again without paying again
  • ๐Ÿ› Not interested in your newsletter
  • ๐Ÿ› Damaged goods
  • ๐Ÿ› Would be 5 stars butโ€ฆ
  • ๐Ÿ› Too many bugs
  • ๐Ÿ› Very nice puzzle but buggy
  • ๐Ÿ› A little buggy.
  • ๐Ÿ› Too short
  • ๐Ÿ› Why so short/ pourquoi si court
  • ๐Ÿ› Started off loving the puzzles...
  • ๐Ÿ› Save feature needed
  • ๐Ÿ› Poor interface
  • ๐Ÿ› Stuck on chapter 3