Games like PhysiX (Project Euphoria)

"Garry's Mod" is a physics sandbox game with no set goals, allowing players to create their own contraptions by spawning and welding objects together. The game also features a variety of online modes created by the community, including Trouble In Terrorist Town, Prop Hunt, and Elevator: Source. Players can also engage in silly physical comedy by posing characters in humorous ways.

People Playground is a sandbox violence game where players can experiment with a variety of weapons and vehicles in a simulated environment. It offers creative freedom to build, destroy, and explore, with an emphasis on physics-based interactions and destruction. The game features detailed graphics and a range of tools to create unique and destructive scenarios. However, it contains mature content and is intended for mature audiences.

"Unturned" is a horror shooter game that offers various modes including 2-player co-op, multiplayer, and single-player. The game boasts excellent mechanics, fun visuals, and a range of weapons to combat zombies and other players. However, it is very grinding, full of bugs, and can be hilariously glitchy, but the challenging PvP and dynamic nature systems make it a unique experience.

Team Fortress 2 is a team-based multiplayer online first-person shooter game featuring distinct character classes. Players must work together to complete objectives such as capturing points or escorting a payload. With numerous cosmetic items and hats, customization is abundant, allowing players to express their personality while securing victory. Engage in fierce competition, strategic gameplay, and a vibrant community in this enduring classic.

Totally Accurate Battle Simulator is a wacky physics-based warfare simulation game. Command a variety of units with unique abilities and watch as they bumble into battle, resulting in unpredictable and often hilarious outcomes. Perfect for casual players seeking a light-hearted and entertaining experience.

"Brick Rigs" is a sandbox physics game where players can build and drive a variety of vehicles made from bricks, from cars and helicopters to fire trucks and tanks. The vehicles' physics are dynamic, allowing for realistic movement and destruction. The game features a multiplayer mode for racing, demolition derbies, and battles with friends, as well as a workshop for sharing and downloading user-created content.

"Fun with Ragdolls: The Game" is a physical sandbox simulation where players can create and manipulate ragdoll characters in various environments. The game offers a range of tools and options for customization, as well as different challenges and scenarios to complete. Players can experiment with physics-based mechanics to create hilarious and unpredictable situations, or simply enjoy causing chaos with the ragdolls.

Sven Co-op is a cooperative horror shooter where 1 to 2 players team up to battle computer-controlled enemies and solve puzzles together. The game emphasizes teamwork in both single-player and multiplayer modes, challenging players to strategize and survive against various threats. It builds on the classic Half-Life experience with a focus on collaboration.

Grand Theft Auto V Legacy follows three criminals—a young street hustler, a retired bank robber, and a dangerous psychopath—who navigate Los Santos’ criminal underworld while pulling off daring heists. Players explore a vast, detailed city with high customization options and dynamic gameplay. Trust is scarce in this ruthless world where survival depends on cunning and skill.

Half-Life 2: Deathmatch is a multiplayer-focused game set in the Half-Life 2 universe, offering both deathmatch and teamplay modes. Experience stunning visuals and innovative physics-based gameplay, where you can manipulate objects and weapons to your advantage. With the option for co-op and single-player modes, engage in fast-paced action, tossing toilets and other objects at friends or AI opponents, but be aware of occasional bugs.