Free Action Games

Purple Martians - A really cool platform game like Bubble Bobble, Lode Runner, or Super Mario. Its completely free!! Features: action game works identically in Linux and Windows, two players can play at the same time, 35 huge levels (plus you can build more!), 3 difficulty levels (easy, normal, hard), user defineable setup for keyboard and/or joystick, sound effects and a soundtrack by Russel Hoy, bombs you can carry and throw, rockets you can ride and steer, lots of bad dudes and items that are completely customizable with the level editor, zooming game map (looks cool). And the best feature of all: The Level Editor to make your own levels!
Download          OS: Windows | Linux | DOS

Overgod - For too long has humanity been ruled by cruel and disputatious gods! Fly through the various layers of the Celestial Oversphere to unseat those who control the universe. This is my latest game, Overgod. It's similar to my last action game, Lacewing, but better in almost every way. Basically, you control a little vehicle in the middle of the screen and fly around and shoot things - a bit like asteroids, but the asteroids move independently and shoot back. You can also upgrade your vehicle in various ways. Features include: Over 100 different enemies, Lots of randomness and chaos, Various different modes and unlockable challenges, 1 or 2 players (splitscreen), Pretty low system requirements (about 300MHz is plenty, and it doesn't need any kind of fancy graphics card), Days of fun!
Download           OS: Windows | MacOS           

Adagio - Adagio is a shoot-em-up (shmup) based upon such classics as R-Type, Gradius, Project X and ThunderForce. It features retro classic gameplay along with a detailed, anime-like story. Along with graphics stylistically appropriate for the late 80's/early 90's, it features detailed bosses and secrets in every level. If you like games from the height of the shmup golden age, then this game is especially catered for you.
Download           OS: Windows            Size: 17.6 Mb

The Real 3D Shooter - A real 3D shooter (now also for Windows) Some time ago a friend told me about a Computer-Game University somewhere oversea, and there they learn how to write a 3D shooter within 15 minutes. Many repetitions later I had enough of it and said: No problem for me. Here is the result: True, the engine was finished within 15 minutes, but pixeling the mouse cursor lasted at least the same time, not to mention the sound effects.
Download           OS: Windows/DOS            Size: 60Kb

Meteor 2 - Meteor 2 is takes the pounding gameplay from Meteor to create a whole new game using a new sector based terrain engine. M2 features full mod support, proper integrated editors, 16 bit sector based graphics, 16 bit dynamic lighting (Fblend), SeeR scripting (C based) and real-time action. It maintains the feel of the original Meteor but with a considerably advanced engine offering far superior flexibility and video/sound effects. Expect everything in Meteor (and a little more) but just much nicer.
Download          OS: Windows

Worminator - Worminator is a sidescrolling action game written in the C++ language. It is akin to many Apogee Software and ID Software classic action games such as Duke Nukem and Commander Keen. In it, you play as The Worminator (or as several other optional characters) and fight your way through many levels of madness and mayhem. Worminator features nine unique weapons, visible character damage, multiple supported resolutions, full screen scrolling, sound and music, and much more! Worminator was made from scratch using completely free development tools such as the DJGPP Compiler and the Allegro game library. Now that the game has been completed, it is being provided to you for free!!!
Download          OS: Windows

Games Sections: Action, Adventures, Arcade [1], Arcade [2], Board games, Card games, Kids, Puzzles, RPG, Simulators, Strategy Games