https://github.com/wesnoth/wesnoth
Wesnoth is one of those games where once you start playing, you fall into a time warp and lose hours before you know what happened.
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https://github.com/wesnoth/wesnoth
Wesnoth is one of those games where once you start playing, you fall into a time warp and lose hours before you know what happened.
Cool. The map reminds me of Heroes of Might and Magic
Minetest and Mindustry are two of my favourites. It's a bit complicated to find a good combination of Minetest mods though.
+1 for Minetest both client and server too; we run one locally for the kiddos :)
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Beyond All Reason (RTS)
Beyond All Reason is really cool! Had a lot of fun with it wrestling with the AI and teaming up with my friends.
It's scratching that Starcraft itch while I tap my fingers waiting for Microsoft to kick Bobby Kotick out of Activision-Blizzard lol.
I can also recommend Beyond all Reason. If you ever played Supreme Commander, this game is like a sequel. It also has an active YouTube streaming community with tutorials and ingame are some scenarios to teach you about the various units and strategies.
These get mentioned a lot:
Bonus: they also work great on Android!
Super Tux Kart is a classic
Same with Supertux which is a Linux Super Mario alternative.
Also the level editor isn’t super complex so it can be used as a Mario maker alternative
Veloren!
As an MMO, what is the gameplay loop currently? Doing quests or raids or pvp or just sandbox?
I'm not all that far in the game, but it seems progression revolves around crafting. Killing enemies and mining for materials to make various armours and weapons to take of harder dungeons.
I don't believe there are quests or pvp yet unfortunately, but it still ends up being fun despite being a highly ambitious game truthfully barely scraped the surface of its ambitions yet.
Endless Sky. The save game is a text file. Save a file on the mobile app (F-Droid), and on the PC (Flatpak), and note the last line. This is the line you must swap to transfer the save file. It is the first game I have played on both practically. The game mechanics are different between the two and you need to alter your strategy accordingly. On mobile, I travel with a ship setup for boarding pirate vessels and never target enemies directly; all of my guns are automatic turrets. I just use a fast ship and travel with a large group of fighters. It is more of a grind on mobile, but it can be used to build up resources and reserves. The game is much bigger than it first appears to be. You need to either check out a guide or explore very deep into the obscure pockets of the map.
I haven't seen OpenTTD mentioned yet: https://www.openttd.org/
If you like it you may also check out OpenRCT - although this one needs original game files from RollerCoasterTycoon (a few bucks on Gog or Steam)
Wesnoth, SuperTuxKart, and Xonotic
Cataclysm dark days ahead
I have to second the mentions of OpenTTD, Battle for Wesnoth, Ur-Quan Masters and Nethack.
I'd also like to add:
Then there are also some open-source re-implementations of commercial games (that need the original game files) that haven't been mentioned yet:
Xonotic!
Palapeli. It's such a great jigsaw puzzle game.
Some I don't see mentioned yet:
Zero k, RTS
https://trilarion.github.io/opensourcegames/games/top50.html
Keep in mind that this list contains both full games and engines for closed source games.
I played a lot of FreeCiv and had a lot of fun with it. Not sure if it's still dev/maintained
Neverball seems far less known than the other ones, but it's really good and has tons of levels.
Extreme Tux Racer is a nice ski racing game but tux the penguin has some aerial maneuverability for long jumps.
Warzone 2100 is a nice RTS, especially fun with friends