Caesar III is an absolute classic and you can play it on modern systems, like Linux, with the free and open source game engine Julius which recently had a big new release.
Sunday is a day to do the dishes, hoover the halls, wipe the decks and probably play a whole lot of video games. Here's our Sunday section of interesting things.
SanAndreasUnity, an open source remake of the game engine for GTA: San Andreas that aims to be cross-platform has a new release out, with better Linux support included.
A fun open source game engine project we've not covered here before is OpenTESArena, an open source re-implementation of The Elder Scrolls: Arena and it just had a new release.
OpenMW, the excellent open source game engine for Morrowind has made some interesting progress towards supporting later games like Oblivion, Skyrim, Fallout 3 and New Vegas.
For those who love the classic RollerCoaster Tycoon 2, OpenRCT2 looks like a rather decent open source game engine to give it a new lease of life especially as it continues to be updated.
OpenSAGE is an open source game engine that aims to be a re-implementation of SAGE, the RTS engine used in Command & Conquer: Generals and other RTS titles from EA Pacific.
Another open source game engine has been advancing recently, this time it's openage, the game engine for playing games like Age of Empires, Age of Empires II (HD) and Star Wars: Galactic Battlegrounds.
A fresh release of OpenMW, the open source game engine to play Morrowind has been released. There's not a huge amount of new features, but there's a lot of fixes.
One thing I totally forgot to write about is that in the next release of OpenMW, the open source game engine for Morrowind, will finally have the 'Distant terrain' feature.