Games like 18+ on Steam
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PictoQuest
Logic puzzles with a light RPG twist, here comes PictoQuest!
The Treasures of Montezuma 3
Match tokens to unlock incredible riches in The Treasures of Montezuma 3! With Casual and Timed modes to enjoy, 160 levels to beat, and dozens of mind-bending mini-puzzles to solve, you could be in the jungle for months!
Optika
Discover the world of light physics: play with lasers, prisms, mirrors, magnets and dozens of other optical devices. Explore the world of Optika with Prof. Opticus and his assistant, Sofia! Research and complete more than one hundred challenging puzzles!
Spectraball
Spectraball combines elements of platforming, puzzle solving, addictive gameplay, and stunning visuals to deliver an experience that sets a new standard for the genre. In addition, Spectraball utilizes Steamworks, offering full support for achievements and stat tracking.
Sometimes: Success Requires Sacrifice
Sometimes: Success Requires Sacrifice, the title says it all! You get thrown into a dark room, with no light to be found anywhere! Are you willing to end your life to light the way for the next generation to proceed further? Play it today and find out!
Pixel Puzzles 2: Birds
Pixel Puzzles 2: Birds is a traditional style jigsaw puzzle game, with crabs scurrying around so WATCH YOUR FINGERS!!!
Love n Dream: Virtual Happiness
《Love n Dream: Virtual Happiness》is a card-based puzzle game with RPG components. Your job is to lead different girls to advance their adventure levels in a Virtual Reality Game.
Sonicomi
Super Sonico is a cheerful, hardworking college student and amateur musician who's about to make her modeling debut. As her personal photographer, you will be responsible for Sonico's image, balancing the needs of your clients with your own vision for Sonico's future.
Dogolrax
You awake on an unknown planet with amnesia. What are those horrific monsters? Who are these mysterious priestesses? Inspired by cult classics such as "Another World", "Flashback" and others, Dogolrax aims to surprise you in ways few games have.
Pro Office Calculator
A completely normal office calculator.
Surfingers
Surf as far as you can. Through the oceans, caves, snowy hills and deserts full of sand.
Pixel Puzzles 2: Space
Pixel Puzzles 2: Space is a traditional style jigsaw puzzle game in a universal style, each piece uniquely shaped like no physical puzzle could be.
Short Stories Collection of Class Tangerine
Short Stories Collection of Class Tangerine is a collection of five Visual Novels by indie-game team "Class Tangerine".
Wayout 2: Hex
Can you find it again?
Slash It 2
Slash It 2 is a 2D colorful arcade game. The goal is to press letters, numbers and type words in the right time and direction.
CrossCells
CrossCells is an ambient logic puzzle game.
It's Spring Again
"It's Spring Again" - an educational game for children ages two and up. It uses game mechanics to teach children about the seasons.
旧手表 - Old Watch
This is an Visual Novel game. It's a story about time leap.
Rabbit Hole 3D: Steam Edition
Rabbit Hole 3D: Steam Edition is a minimalistic retro puzzle game. The game features 3D word puzzles based on Chapter 1 of Alice in Wonderland by Lewis Carroll. Players must navigate through keywords from the book’s initial chapter.
Fly O'Clock
Fly O’Clock is tiny, highly-addictive single & online multiplayer arcade endless jumper with innovative one-touch mechanics and unique pixel-art graphics.
Three Digits
Three Digits is the sequel to our first game Two Digits. You are given 14 numbers less than 1000, and all you have to do is to choose two subsets with the same sum.
Spikit
Spikit is a bullet hell game developed by a single developer, Igor Petrović. With a soundtrack composed by Dario Malešević. In this game, the player will have to dodge a constant barrage of spikes coming from the side of the screen.
JermaSlots
Ever wanted to step in the compact shoes of everyone's favorite TWITCH streamer, Jerma985 and spend your hard earned BIG BITS on a slot machine? Well now is your chance!
Amairo Chocolate
Autumn. With the leaves just starting to change color, a boy arrives at Yunagi Village. The first person he meets is a girl handing out flyers -- a cute, cat-eared waitress.
Mouse (Sneaking)
In this runner game, you play as a mouse who has stolen cheese as much as you can.
Her Lie I Tried To Believe
Her Lie I Tried To Believe is a short kinetic novel about the persisting hatred of a boy throughout his life, the destructive relationship that was born from it, and the consequences he had to face as a direct result.
UnHolY DisAsTeR
The novice priestess who serves "the Spirit of Aqua”, Clementine fights against so-called demons with the spirit's blessings in this exploration based side-scrolling action game!
Pretty Girls Panic!
Socially conservative sea creatures have constructed a water filled screen to hide the Pretty Girls from view. But please don't panic! Use your special tool to penetrate the barrier and reveal the girls while avoiding getting caught. Girls will gradually disrobe from stage to stage to reward you for your success.
WIN THE GAME: DO IT!
WIN THE GAME: DO IT! - is a hardcore game. Try to finish the game without spending your nerves.
Gumboy Tournament
Test your reflexes, judgment and tactics while facing up to eight other players in this follow-up to the critically acclaimed and popular arcade game Gumboy: Crazy Adventures, winner of numerous accolades including Gametunnel's GAME OF THE YEAR 2006.