Games like LavaCat

"Rising World is an open-world, voxel-based sandbox game with fully destructible environments. Gather resources, build and create your own structures or cities, and survive in the wilderness, alone or with friends. The game features a randomly generated world, drivable boats, and over 200 building materials." Note: The game is currently undergoing an engine migration and may differ from the store page description. A preview of the new version is available in a beta branch.

"Starship EVO is a work-in-progress space sim that offers a creative building experience, allowing players to build and customize starships, space stations, and handheld weapons using a variety of tools and options. The game currently features engaging space battles and plans to add a survival mode in the future. A Server/Client framework is used for multiplayer, which requires port forwarding." less than 400 characters, more than 100 characters.

"CodeSpells" is a simulation game that offers a variety of play modes, including single-player, local multi-player for up to 2 players, and player-versus-player. The game's development and community are still active, with a new focus on building an open-source platform for the creation of various games and experiences. There was a delay in updates between September 2017 and August 2020 due to the team seeking additional funding and taking care of personal needs.

Interstellar Marines is a tactical sci-fi First Person Simulator, inspired by movies like Aliens and games like Half-Life. It offers singleplayer and co-op/PvP gameplay, with dynamic environments and non-scripted AI. The game aims to evolve the FPS genre with its blend of sci-fi, role-playing, and military realism.

"Medieval Engineers" is a sandbox game set in the medieval era, focused on realistic engineering principles. Players can build various structures, such as castles and siege machines, using a variety of materials. The game also features a physics-based destruction system, allowing for realistic deconstruction and demolition of creations.

"Iron Armada is a space combat game that encourages multiplayer cooperation for mining resources, salvaging ship parts, and building a variety of ships without restrictions. With easy-to-use ship construction and a wide range of parts to choose from, create the ships you need for battle and engage in combat with other players. The game is accessible for both casual and hardcore fans."

Eden Star is a sci-fi survival game set on a mysterious alien planet. Gather resources, build structures, and defend against hostile creatures to ensure your survival. Use intuitive crafting and physics-based mechanics to manipulate the environment and create advanced technology for your survival. Explore, gather, build, and conquer in this immersive and beautiful world.

"Project Explore" is a sci-fi first-person adventure game that lets players explore and survive on alien planets. Gather resources, build bases, and conduct research to learn about the mysterious alien environment. Experience a vast, procedurally generated universe with unique planets, creatures, and challenges in every playthrough.

In Stone Rage, players step into the shoes of prehistoric cavemen and women, battling for survival in a Stone Age world. With a variety of weapons and tools crafted from materials found in the environment, players must hunt for food, fend off predators, and establish their dominance over other tribes. Teamwork and strategy are crucial in this open-world, multiplayer survival game.

"Sirius" is a massively multiplayer Science Fiction Simulation game set in the Sirius Star System in the year 2436. After Terrans demand control over the system, war erupts between them and the Sirius Colonial Council. Players can participate in the war, live along both sides, trade, fight, explore and create their own empire among the stars. The game features 2-player co-op and single-player modes, allowing players to control the economy with their trading craft, battle pirates, and discover unimaginable riches in the galaxy quadrant.