Survival: Fountain of Youth

Could be interesting

Force of Nature is an indie open world sandbox game with fighting, crafting, building and farming systems.

Hardcore medieval multiplayer sandbox with terraforming, free preset and modular building construction, rich crafting (smelting, forging, farming, animal breeding etc.), survival, no target physics based combat, original combat formation system and numerous other features. Taking place in the fictional medieval world, game imposes a realistic system of global politics, economy, and socialization.

Dude Simulator is an open world sandbox game. This is a life simulator. The main objective is to enjoy what you are doing.

Rising World is an open-world sandbox game with randomly generated, fully destructible environments. Starting with the most basic of tools, collect resources to survive in the wildness. Evolve your world to create one of the biggest cities of all time or a gigantic castle, or simply let your imagination run riot! If being creative is all too much, just connect with your friends and get them to help. Rising World is a procedurally generated world, with fully textures landscapes, over 200 different building materials, loads of tools and many other items to help you create OR destroy your world without any restrictions.

Miscreated is a multiplayer online hardcore survival game set in a post-apocalyptic future. You will need to survive against mutants, players, and even mother nature herself.

A New Land, A New Life: Savage Lands is a gritty, brutal, first-person open-world fantasy survival experience in which players have only one goal: Stay Alive. Explore a world where days and nights are spent slaughtering vicious creatures, gathering scarce resources, building shelter and crafting powerful weapons needed to survive. Every decision counts, because one mistake can lead to an unfortunate encounter with death's cold embrace.

Dude Simulator 2 is an open world sandbox game. This is a life simulator. The main objective is to enjoy what you are doing.

Ancient Cities is a Survival and Strategy City Builder PC game through the ages, strongly focused on history and realism. Currently being developed by Uncasual Games. Starting in the Neolithic era, you will have to guide your people through generations, discovering and improving technologies, managing resources and population, facing threats from raiders and Mother Nature herself. And, ultimately, building the most fantastic city of antiquity through the ages in a fully simulated world and ecosystem.

Rewrite medieval history through bloody siege combat and grand strategy. Rule, build, and wage war as one of the minor lords of medieval Europe… Medieval Kingdom Wars redefines Medieval Grand Strategy. Build your cities, wage your wars, serve your king, and experience siege combat with a degree of brutality never seen before

Sky Break is an open-world game on a stormy abandoned planet filled with wild mechas. Learn to master this world and to hack the mechas if you want a chance to survive.