Open Source Side-Scrolling Games

Fast 2d tank arcade game with multiplayer and split-screen modes.

This is a first attempt to create a game in OpenGL with SFML. It is a game for two players, flying with ships in a two-dimensional space setting, governed by the laws of gravity. There are several game modes and a lot of weapons.

A 2D multiplayer space shooter, inspired by the Amiga classic Gravity Force. Play race, mission or dogfight. Single player, with friends or against AI. There are 50+ levels and a map-editor included. Global hi-score and achievements with replays on the website. The game plays on Windows, Linux and Mac.

Polywar is a 2D top-down multiplayer online shooting game - with polygons!

Official map editor for the multiplayer online game Subspace/Continuum. http://getcontinuum.com/

FLAW is a free top-down wizard battle game. It can be played by up to 5 players simultaneously. The goal of the game is to survive as long as possible while more and more fireballs appear in the arena. Gameplay is simple and self-explanatory. The desktop version is available on Windows and Linux - an Android port of has been made by David Lee Evans (https://github.com/DavidLeeEvans/FLAW) The game and all of its assets are licensed under the GNU General Public License Version 3 and may be modified, copied and redistributed under the terms of this license.

Sanicball is a racing game that throws away complex gameplay mechanics, character progression and microtransactions in favor of pure fast. It features the all the latest* dumb internet memes thrown together in a blender to form a truly europhoic circlejerking experience. This wasn't the original intention but it ended up happening anyway. This game is purely fan made, Sega or Sonic Team were not involved in creating this. Also, 'Sanic Team' and 'Notsega' are fictional companies.

A modified client for the open source online multiplayer game Teeworlds, featuring a Lua API. Other highlights include smooth UI design, an identity management system, A* path finding for race maps and a great customizability.

PK Rhythm is a rhythm game based on Mother 3's battle combo system. Time your beats to the tempo and try to get 16-hit combos! It's still under development, but feel free to check it out.

Triplane Classic is a side-scrolling dogfighting game featuring solo missions and multiplayer mode with up to four players.

This is a 2D shooting action game for two players for GNU/Linux, Mac OS X, and Windows. Current release written in C++ using the SDL library with its extensions. Next release will be in Java.

A 2D game inspired by Gravity Power, Star Control and Super Smash Bros. Features include 4-player split-screen action, enemy AI to play missing players, 15 ships, 9 levels and plenty of fun blowing up the level and the other players to smithereens!

FU-18 is an open source, micro-transactioned arcade style game. If you would like to join the project, shoot me an email at newsuperyoshi@icloud.com and I'll get back to you.

A open-source reimplementation of the Amiga game called "Roketz". It was both a Shoot-em-up and a racing game, against gravity.

ATOM by Zachary Wormleighton Story: The game pitts you, the player, in a futile battle against a host of angry ions. You are the almighty atom with 111 electrons - but, you're extremely unstable. You must fire electrons at the enemy to destroy the Helium-2 atoms and steal their electrons trying to survive in the nuclear prison you're in. Objective: You must try and survive as long as you can in the arena-area and rack up as many points as possible. You will be given collectable upgrades throughout the gameplay and will encounter a number of enemies that spawn, trying to reduce you to mear sub-atomic particles in a thermo-nuclear fission that will blow your mind! Enjoy! Controls: W - To move upwards S - To move downwards A - To move to the left D - To move to the right P - To pause the game Mouse - To aim Left Mouse Button - To fire Esc - To exit the game (Also, you can use F9 to take a screenshot of the game.) WARNING: ATOMS NOT TO SCALE.

Bedroom battle tanks is a JGame based 2D tank shooter created as an entry for a game development competition.

NOTE THAT THIS PROJECT HAS MOVED TO GOOGLE CODE https://code.google.com/p/bitfighter/ Bitfighter is a really fun (!) multiplayer shoot-em-up with customizable ships and Robotron-like controls. Solid networking for great Internet playability.

STILL IN EARLY DEVELOPMENT: OUYA game inspired by the original "Bomberman". Details: 2D, 4 player support.

Welcome to CYPHER. A corrupt government controls Mars as corporations sell oxygen at a premium. You are an agent with an incredible skill set determined to eliminate the system. Taking information is how you will do it; unfortunately, other organizations are seeking what you are. They will stop at nothing to steal the valuable data you hack... The plot of CYPHER is the overthrow of the tyrannical Martian government. In the not-too-distant future, colonization of Mars has been completed and the new government is being influenced by evil corporations. These organizations are rife with corruption and greed. The populace seems to not notice or care, lulled into a false sense of complacency by the media as their freedoms are stripped from them. From the darkness, a collection of underground computer hackers emerges to find valuable secret information which can lead to the downfall of the destructive forces that have taken over the planet. YOU are one such hacker.

2D action game of underground tanks with customizable intelligence of computer players and multiplayer option, allowing both network and splitscreen.

Fliegerass is a 2D side-scroller arcade game. The player controls a WWII airplane in single- and multi-player battles.

Mod-friendly framework for the creation of 3D-rendered, two-dimensional fighting games. Default character-set features open source mascots (e.g. Tux). A cross-platform Super Smash Bros. clone.

A remake of 1994 Amiga game "Gravity Force 2" (GF2), a two player, realtime versus game crossing the destructible bitmap level of "Worms" with the flight mechanics of "Thrust". The core mechanics and appearance of this game is intended to be faithful to GF2. Some expansions have been made over the original, made possible by modern computing power, such as increasing the number of projectiles, higher definition graphics. Programmed in Dark Basic Pro. Requires Windows with DirectX 9c (can install in parallel with higher DirectX )

This is an "archon" inspired game, themed with free software mascots.