A few that come to mind for me are
- ASCII Sector - space roguelike that was released in the last 2000s
- Sonic Robo Blast 2 - free 3d sonic fangame, built using a Doom engine of all things…
- ClassiCube - free sandbox block-placing game that is similar to 2009/2010 Minecraft Classic
- Chronicles of Denzar - free browser-based RPG similar to dragon quest (previously PhantasyRPG.com) running since the early 2000’s
I live in Colorado Springs and it’s cool to see my town in a game. I can never keep into isometric stuff for some reason though. I need to start it again.