From website:

A classic, turn-based strategy game with up to four armies fighting against each other. Challenge yourself in a campaign against AI, or a hot-seat battle with a friend. Using the easy map editor you can create any imaginable scenario to play!

ToF II follows in the footsteps of the original Tanks of Freedom and brings even more fun and depth. Take command of new types of units, use their powerful abilities, and turn tides of battles with many unique heroes. Experience new stories in four dedicated campaigns, or play skirmishes on a new set of maps!

This game is an open-source hobby project. All assets and code can be found on the Github page.

From website:

Lix is an action-puzzle game inspired by Lemmings (DMA Design, 1991) for Windows, Linux, and Mac. It's free and open-source software, placed in the public domain via CC0.

Solve over 700 singleplayer puzzles. Play real-time multiplayer. Design your own levels.

From website:

Welcome to 14.0!

OpenTTD’s first release was in March of 2004. Now twenty years later, we are proud to present to you: release 14.0.

And boy, what a release it is. Do I dare to say: this has been the biggest release yet?

From website:

The Widelands Development Team is proud to announce the immediate availability of the stable release Widelands 1.2.

Since the release of version 1.1, we implemented several hundreds of new features and bugfixes; for example, to name just a few of the highlights:

UI Plugins are add-ons that can add more functionality to the user interface
Naval Warfare preview: Invade foreign coasts using warships!
This is included as a preview feature and needs to be explicitly enabled in the game setup screen.
Soldier garrisons for ports and headquarters
Balancing changes to the Amazon economy
Fifth scenario for the Frisian campaign
More settings in the game setup screen, such as configurable durations for timed win conditions
Diplomacy handling for the computer players
Stick pinned notes onto map fields to mark important points
Hyperlinks let you navigate within the encyclopedia and to the online help
Easy maps publishing inside the editor
High-resolution images for many more units
Accessibility enhancements for many user interface components
Expose more functionality to the add-ons and scenario scripting interface
Fixed many crashes and hangs and enhanced error handling

From Website:

"March 2024. The development team is proud to present version 1.18 of The Battle for Wesnoth!

This release features many new additions as well as refinements to existing content including a new Drake campaign, a full remake of our oldest Loyalist campaign, greatly improved graphical performance, major balance changes for multiplayer, achievements, many enhancements to the editor, and so much more!"