Here's a bunch, in no particular order: https://godotengine.org/ https://godotengine.org/ https://o3de.org/ https://o3de.org/ https://defold.com/ https://def

Here's a bunch, in no particular order: https://godotengine.org/ https://godotengine.org/ https://o3de.org/ https://o3de.org/ https://defold.com/ https://defold.com/ https://www.stride3d.net/ https://www.stride3d.net/ https://gdevelop.io/ https://gdevelop.io/ https://armory3d.org/ https://armory3d.org/ https://torque3d.org/engine/ https://torque3d.org/engine/ https://flaxengine.com/ https://flaxengine.com/ https://pragma-engine.com/ https://pragma-engine.com/ https://wickedengine.net/ https://wickedengine.net/ https://www.adventuregamestudio.co.uk/ https://www.adventuregamestudio.co.uk/ https://castle-engine.io/ https://castle-engine.io/ https://solarus-games.org/ https://solarus-games.org/