Here is a list of freeware games that might interest you:
Dwarf Fortress:
http://www.bay12games.com/dwarves/
Falcons Eye:
http://falconseye.sourceforge.net/
Angband:
http://rephial.org/
Rogue Survivor:
http://roguesurvivor.blogspot.com/
NAEV:
http://naev.org/
ascii Sector:
http://www.asciisector.net/
Transcendence:
http://transcendence.kronosaur.com/
Birth of the Empires:
http://birth-of-the-empires.de/
Battle for Wesnoth:
http://www.wesnoth.org/
Advanced Strategic Command:
http://www.asc-hq.org/
FreeCiv:
http://sourceforge.net/projects/freeciv/
FreeCol:
http://www.freecol.org/
Simutrans:
http://www.simutrans.com/
I guess there are many more good games most people just haven´t noticed.
So if you know some - please post them here!
Nice list!
Locomalito released Gaurodan yesterday, go check that out immediately! hehe
http://www.locomalito.com/gaurodan.php
Yes Erico, and it's a true 80's arcade, simple game and very very adictive...
Love it so far, soo much a choplifter! Haven´t managed to beat the last boss yet, but considering loco, there must be a good set of secrets all around.
Pivot by Podbot (Flash/webgame)
http://jayisgames.com/archives/2013/09/pivot.php
An excellent platform puzzle game. :) You have to collect all treasure chests spread out over a grid of 7x7 screens. You can rotate a screen when you're in a platform corner. The catch is that you can only pick up treasure chests when you are aligned with the treasure.
A great game, although I think it's sorely missing an in-game map or radar. It's a little too difficult to navigate the maze without any map (I used this map (http://jayisgames.com/images/PivotMapFinal.jpg)), and all the rotating makes it extra disorientating. Btw you have to collect 49 treasures which is 98%, at first I was wandering aimlessly looking for that last 100% but the last one is located after the exit.
aaand...another one from locomalito:
http://www.locomalito.com/verminian_trap.php
4 player game, haven´t given a go yet, but just about everything from these guys are way cool.
A very nice list, thank you! :)
Magnetized, this is a pretty good idea for a one-button game.
http://jayisgames.com/games/magnetized/
Should be possible to work this into a game with GLBasic, maybe with levels where you have to go to an exit while collecting 3 stars, ala Cut The Rope. :)