OpenArena is a community-produced deathmatch FPS based on GPL idTech3
technology.
There are many game types supported including Free For All, Capture The Flag,
Domination, Overload, Harvester, and more. There are 17 unique player models to
choose from and 12 weapons.
AstroMenace is a brilliant 3d scroll-shooter allowing you to feel the adrenalin
rush of a fierce space battle against relentless swarms of alien invaders.
Immerse into a decisive battle against tons of cunning foes, face the
terrifying bosses and protect your homeland throughout 15 diverse levels of
the game. The hardcore gameplay of AstroMenace, packed with pure non-stop
action, will become a full scale test for your basic instinct of survival.
AstroMenace shines with stunning special effects which in combination with
superb 3d graphics guarantee that the game will feast the eyes of even most
experienced arcade players. The quality of visuals ensures that the
demonstration of your superior power and new weaponry will look really
impressive and awesome, so the destruction of foes is a truly amazing sight.
The game provides a wide variety of armaments and weapon upgrades for
discharging the retributive wrath upon the hordes of enemies, besides it has
a great number of improvements for enhancing the defensive abilities of your
spaceship. Collect money during the combat and invest them into turning your
spaceship into an ultimate weapon of mass destruction.
OpenBOR is a continuation of the Beats Of Rage 2D game engine, which
was originally created by Senile Team.
OpenBubbles is a clone of Evan Bailey's game Bubbles.
OpenCity is a full 3D city simulator game project. It is written
in standard C++ with OpenGL and SDL from scratch. It is not intended
to be a clone of any famous city simulator from Max*s. So, if you
are looking to download a free SimCity 4 like, please forget OpenCity.
OpenClonk is a free multiplayer action game in which you control clonks,
small but witty and nimble humanoid beings. The game is mainly about
mining, settling and fast-paced melees.
OpenClonk is not just a game but also a versatile 2D game engine that
allows the creation of mods. It is the successor of the shareware game
series Clonk and thus inherits many of its features.
From the nonsense README:
Nonsense generates random (and sometimes humorous) text from datafiles and
templates using a very simple, recursive grammar. It's like having a million
monkeys sitting in front of a million typewriters, without having to feed or
clean up after them. From fake Slashdot headlines to absurd college courses to
buzzword bingo cards, Nonsense is a good way to waste time.
Openglad is a port of the open-sourced DOS game known as
Gladiator (http://fsgames.com/glad/). It is a top-view gauntlet
style RPG that features fast paced multiplayer action, several
different classes, and a scenario editor.
OpenJazz, is a free, open-source re-implementation of
the classic Jazz Jackrabbit(tm) game engine.
OpenLieroX is based and compatible to the famous LieroX. LieroX is
a 2D shooter game. It is an unofficial sequel to Liero, and is the
most popular of all the Liero clones. It features online play, fully
customizable weapons, levels and characters. Liero Xtreme was created
in C++ by Jason 'JasonB' Boettcher, an Australian programmer.
The game is based on a deathmatch setting, where multiple players
face off in a closed level. Each player is equipped with five weapons
selected out of all the weapons allowed, and with a ninja rope that
allows the player to move in any direction. Players begin with a
set amount of lives, and whilst the game records the number of
kills, the last man standing is usually considered the winner.
LieroX also allows team deathmatches, which has made it common for
players to form clans.
Because of the huge community, there are dozens of levels and mods
available. You also have no problem to find somebody on Internet
to play with. Or if you want to play offline, you also can play
with bots.