
    gbrainy is a game to train memory, arithmetical, verbal and logical skills
    with many sorts of exercises of different difficulty levels. 
    
      
    It should have something for all ages and purposes: kids whose parents want 
    them to develop their capabilities, adults that want to keep their mind in 
    form or just try it out for fun, older people that might need to do some 
    memory exercises, etc.
    
    

gbrainy

gbrainy is a game to train memory, arithmetical, verbal and logical skills.


      Reversi is a two-player strategy game, played on an 8 by 8 board.
      Players use tiles that are dark on one side and light on the other.
    
      
      The object of reversi is to flip your opponent’s tiles to your color,
      while your opponent is trying to flip your tiles to his own color.
      Opponent’s tiles are flipped when trapped between an already placed tile
      of your color and the tile you add. Who finishes with more tiles wins!
    
      
      Reversi allows you to play both a classic reversi game, and the
      reversed variant, where the goal is to finish with less tile than your
      opponent.
    
    

Reversi

Dominate the board in a classic reversi game, or play the reversed variant


      Naval Battle is a ship sinking game. Ships are placed on a board which
      represents the sea. Players try to hit each others ships in turns without knowing
      where they are placed. The first player to destroy all ships wins the game.
    
    

Naval Battle

Figure out the word before your guesses run out!Three difficulty levelsAlmost 5k possible answersNeed a break? Close the game and automatically pick back up where you left off

Warble

Take charge of your own personal tank to battle your way through multilevel arenas, defeating the enemy, and completing objectives. Upgrade your tanks to be faster, tougher, and more powerful than your opponents!. Hack your tank's AI to outsmart the enemy's tank to become reigning champion! Build your tank fleet, with real code... can you outsmart your own AI?

Tank Warriors

Driving, shooting, explosions, and programming - all in one game

 Hatari is an Atari ST/STE/TT/Falcon emulator for GNU/Linux, BSD, Mac OS X, Windows and
			other systems which are supported by the SDL library. The Atari ST was a 16/32 bit
			computer system which was first released by Atari in 1985. Using the Motorola 68000 CPU,
			it was a very popular computer having quite a lot of CPU power at that time. Unlike many
			other Atari ST emulators which try to give you a good environment for running GEM
			applications, Hatari tries to emulate the hardware of a ST as close as possible so that
			it is able to run most of the old ST games and demos. Hatari is open source software and
			is distributed under the terms of the GNU General Public License (GPL).
      Hatari supports the emulation of most of the ST and STE hardware, including some special
			tricks like raster interrupts, border effects and PSG sample sound. A joystick can be
			emulated with the cursor keys or with a real PC joystick. Hatari also features the
			possibility to "mount" a directory of the host system as a ST drive, or to use images
			from an original Atari's hard disk.
			Hatari is also able to emulate the additional hardware of the TT or Falcon machines,
			like the Videl video chip or the DSP 56001. However, note that TT and Falcon support are
			currently still in development and experimental.
    

Hatari

Cockatrice is an open-source, multiplatform program for playing tabletop card games over a network. The program's server design prevents users from manipulating the game for unfair advantage. The client also provides a single-player mode, which allows users to brew while offline.

Cockatrice

Virtual tabletop for multiplayer card games

X-Moto is a side-scrolling 2D motocross platform game where the objective is to collect all the floating items in the level and proceed to the checkered finishing ball. The motocross bike that the player rides in xmoto has a lot of bounce, and the if the player hits their head on any solid object the level has to be restarted.There are hundreds of levels available in X-Moto, both included in the initial install, and downloadable from the Internet. There is also the ability to challenge fastest times with other players from around the world. and saved ghost data to visually see the runs of other players through the levels.

X-Moto

Katawa Shoujo is a bishoujo-style visual novel set in the fictional Yamaku High School for disabled children, located somewhere in modern Japan. Hisao Nakai, a normal boy living a normal life, has his life turned upside down when a congenital heart defect forces him to move to a new school after a long hospitalization. Despite his difficulties, Hisao is able to find friends—and perhaps love, if he plays his cards right. There are five main paths corresponding to the 5 main female characters, each path following the storyline pertaining to that character.The story is told through the perspective of the main character, using a first person narrative. The game uses a traditional text and sprite-based visual novel model with an ADV text box.Katawa Shoujo contains adult material, and was created using the Ren'Py scripting system. It is the product of an international team of amateur developers, and is available free of charge under the Creative Commons BY-NC-ND License.

Katawa Shoujo

Roll 'm Up is professional classic pinball game from late 90s with great graphics and music. Supports multi player game up to four players. The game has been created by Lostboys Media Lab for Dommelsch Brewery from Netherlands in 1998 as part of its marketing strategy.Use Escape button in the game to open its main menu.This is abandoned proprietary software. Resizing window sometimes may cause the game to crash. Take a look at README for other known issues: https://github.com/flathub/nl.lostboys.rollemup#known-issues

Roll 'm Up

2006Scape is a free, open-source Runescape 2006 Emulation server

2006Scape

2006Scape is a free, Runescape 2006 Emulation server


      Each square piece has a number on each side. Position the pieces on the left
      side of the board so that the same numbers are next to each other. If the
      numbers don’t match, you can’t put the piece there. Move quickly: you’re
      being timed!
    
      
      You can make the game easier or harder by changing the size of the board.
    
    

GNOME Tetravex

FreeOrion is a free, Open Source, turn-based space empire and galactic conquest computer game.
      FreeOrion is inspired by the tradition of the Master of Orion games, but does not try to be a clone or remake of that series or any other game. It builds on the classic 4X (eXplore, eXpand, eXploit and eXterminate) model.
    

FreeOrion

Turn-based space empire and galactic conquest game

Blobby Volley is one of the most popular freeware games where two blobbed shaped entities play volleyball against each other. You can play against a teammate or alone against computer opponents. It's possible to play in local network and in offical servers. Controls via the mouse or the keyboard are customizable. The points are saved and can be displayed and compared in statistics.This is an official continuation of the famous Blobby Volley 1.x arcade game from 2000s.

Blobby Volley 2

The head-to-head multiplayer volley-ball game.

UltraStar Deluxe is a free open source karaoke game for your PC. It records the voice of the players and gives points if they hit the notes. Unlike the commercial alternatives, UltraStar Deluxe allows users to add their own songs.For the Flatpak release the songs need to be placed into ~/.var/app/eu.usdx.UltraStarDeluxe/.ultrastardx/songs/.

UltraStar Deluxe

Karaoke program that evaluates your performance

Athenaeum is a game launcher and manager designed as a libre replacement for Steam.It's built with PyQt5 and utilizes the flatpak application container system.

Athenaeum

Pixel Wheels is a retro top-down race game for Linux, macOS, Windows and Android.It features multiple tracks, vehicles. Bonus and weapons can be picked up to help you get to the finish line first!You can play Pixel Wheels alone or with a friend.

Pixel Wheels

Pixel Wheels is a retro top-down race game.

Colobot (Colonize with Bots) is an educational game aiming to teach programming through entertainment. You are playing as an astronaut on a journey with robot helpers to find a planet for colonization. It features 3D real-time graphics and a C++ and Java-like, object-oriented language, CBOT, which can be used to program the robots available in the game.

Colobot

Save your garden friends from the ghosts! BONK BONK!
      Mouse locks when you click on the window, press ESCAPE to unlock the mouse.
      
        W,A,S,D / Arrow Keys = Move
        L-SHIFT / R-CTRL = Sprint
        Left Click = Shoot
        Right Click = Zoom
      
    

AI Generated Game

The AMC Squad is an epic story-driven FPS running on the Build Engine. It combines gameplay mechanics of retro-shooters with aspects of modern titles, complete with a story-driven narrative that spans over several episodes.
      Each episode is a full-length campaign featuring multiple varied locations to explore and many hidden secrets and collectibles to discover. Experience an overarching story that is loosely based on the worlds and settings of other classic Build Engine games. Pick from more than 8 different characters, each with a unique set of items, weapons and abilities, and fight a large selection of different enemy factions that threaten the safety of the world.
      The game currently contains 4 fully playable episodes, with 6 episodes planned total. Episode 5 is currently in development. No release date estimate is available at this time.
      Features:
      
        Classic FPS gameplay mixed with modern mechanics.
        Mission-based level structure, spanning 4+ separate episodes, with more than 20 hours worth of content.
        Intricate and highly interactive levels, with many secrets to find.
        A rich story consisting of multiple character arcs and plot threads.
        8 different characters with different gameplay styles, with more to unlock as you progress.
        Unique loadout of weapons and items for each character, as well as level-specific weapons to find and unlock.
        Collectibles, weapon replacements and a fully-fledged progress system.
        Upgradeable weapons and character abilities.
        Multiple vehicles, including motorcycles, spaceships, tanks and horses.
        In-game cutscenes and pre-rendered FMV sequences, complete with voice acting and subtitles.
        Original music composed by HiveBoss, TheDavisD, AliCatGamer, and various tracks sourced from OpenGameArt.
        And more features you never thought possible in a Build Engine game!
      
    

The AMC Squad

Epic story-driven FPS running on the Build Engine

This app let's you respond to an endless stream of questions.
It uses Open Trivia database.
	  
    

Trivia Quiz

You're playing against the AI in a chess match. The AI has vast computational resources, but you have hacks. Use your hacks to win!

Chess Comp Stomp with Hacks

LÖVE is an awesome 2D game framework for Lua.
    

LÖVE

LÖVE is an awesome 2D game framework for Lua.

Commander-Genius aka CloneKeenPlus is an engine which interprets Commander Keen 1-6 and Dreams.But there is more, how about four player coop, VGA graphics, remastered music and many great mods. There even exists the unoffical trilogy that was planned back then (Keen 7-9). Eventhough that trilogy was never released, it got picked up by fans. With an integrated CG game store you can download every free game with one click and start playing.For registered Keen games you obviously you need the game data of the games in order to play them. Check the Readme file for more information on that. Episode 2, 3, 5 and 6 are registered versions which can be purchased by 3D Realms, Apogee, GOG or bought by someone else. If you still have the old games of the registered version, then copy those into a reachable directory and give it a try.

Commander Genius

An Engine used to play the "Commander Keen" and "Cosmos the Cosmic Adventure" game series

The new Everest installer / manager, powered by Löve2D.
      Everest is an open-source mod loader and modding API for Celeste, allowing you to create custom map packs, texture replacements and code mods to your heart's content.
      
        In-game updater and dependency downloader
        Cross-platform: Windows, macOS, Linux 
        TASBot-verified
        Easily switch between Everest and vanilla Celeste from the title screen or Olympus
        Load mod files without messing with your original files
        Sound test - including easter eggs hidden in Celeste by the legendary Kevin Regamey
        Quality of life improvements
        Enhanced Debug Mode
        A lot of unhardcoded and customizable entities for your custom maps
        And much more that did not fit into this list. Whew!
      
    

Olympus

openMSX is an emulator for the MSX home computer system. MSX was a standard for Z80-based home computers, and was a (largely) Japanese attempt to establish a single standard in home computing similar to VHS in video.The MSX standard was designed by ASCII Corporation in Japan, in cooperation with Microsoft Japan. The later of which provided the extended BASIC for the machine.In addition to emulating MSX, MSX2, MSX2+, MSX Turbo R and many of it's peripherals, openMSX also supports emulating the ColecoVision and Sega SG-1000 game consoles and the SpectraVideo SVI-318 and SVI-328 home computer systems.Note: by default the openMSX emulator only ships with the C-BIOS open-source BIOS implementation. This BIOS is restricted to cartridge based MSX games. For a full MSX or SVI emulation it is necessary to provide your own MSX and/or SVI BIOS ROMs, which must be placed in the ~/.openMSX/share/systemroms directory.

openMSX

Emulate all aspects of the MSX with high accuracy

City-building simulation based on the source release of SimCity by originally developed by Maxis and published by Electronic Arts in 1989.
    

Micropolis

Eternal Lands is a free 3D fantasy MMORPG (massively multiplayer online role playing game) that can be played on Windows, Android, Linux and OSX.There are 12 skills in the game: Attack, Defense, Harvest, Alchemy, Magic, Potion, Summoning, Manufacturing, Crafting, Engineering, Tailoring and Ranging.  There are no fixed class restrictions, so you can develop your character in any way you wish.You, as a player, determine exactly how you develop your character. If you make mistakes, or decide to change or adjust your build, you can do so.  Eternal Lands is not just about combat. Many players focus on more peaceful activities such as collecting resources, creating items, summoning monsters and so on. But if you like combat, there is plenty of it as well, both PvP and PvE.Eternal Lands is owned and run by Radu Privantu. This package is built and maintained by one of the client developers known in game as bluap.

Eternal Lands

Eternal Lands is a free to play, graphical MMORPG


      Although your general goal is reaching the surprising end of the game, you are encouraged to set your own goals while playing. Exploration will be rewarded, and secrets await you!
    
      
      So jump and run around, and enjoy losing your sense of orientation in this World of Wicked Weirdness. Find out what Van Vlijmen will make you do. Pick a path, get inside a Klein Bottle, recognize some memes, and by all means: don't look up.
    
    

AAAAXY

Dust Racing 2D (Dustrac) is a tile-based, cross-platform 2D racing game written in Qt (C++) and OpenGL.Features1-2 human players againts 11 challenging computer players3 difficulty settings: Easy, Medium, HardSplit-screen two player game (vertical or horizontal)Game modes: Race, Time Trial, Duel2D graphics with some 3D objectsSmooth game play and physicsMultiple race tracksFinishing in TOP-6 will unlock the next race trackStar ratings based on the best positions on each race trackEasy to create new race tracks with the level editorEngine and collision soundsPit stopsRuns windowed or fullscreenWill be forever completely freeDust Racing 2D comes with a Qt-based level editor for easy level creation. A separate engine, MiniCore, is used for physics modeling.

Dust Racing 2D

Traditional top-down car racing game including a level editor

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