Julius is an open source re-implementation of Caesar III

Flight simulator

City building game

Open source transportation simulation game

A game of lonely space adventure

Custom Minecraft Launcher to easily manage multiple Minecraft installations at once

Block-based multiplayer game platform

Open source clone of Theme Hospital

Physics sandbox game

Free train simulator

Plan and build a city

Fun with Blocks

A sand simulation game

A multi-player space game, defend the planet from the incoming asteroids!

An evolution simulation game. Take control of your species in the environment and edit your species as a whole. Compete with other evolving species for resources on an alien planet.

Modrinth's game launcher

Kids game, drive a toy wood engine

ATC Training Simulator

Free Train Simulator for everyone

Spaceship bridge simulator game

Enjoyable metro building game

Augustus is an open source re-implementation of Caesar III with changes to gameplay

Develop your civilization from humble roots to a global empire

Space exploration and combat game

Open-world space opera

Amusement park simulation

Futsal team-management game.

Rescue Helicopter Simulator

Kidsgame, drive a toy wood engine

Open source simulation game based upon Transport Tycoon Deluxe