GameAssassin is a very powerful game model interception program, developed by sky from China in 2005. It was originally designed to assist its author in the research of 3D game rendering. It has similar functionality with 3D Ripper DX, but it is a lot more tricky to use. It supposedly can rip everything in D3D9, D3D8, D3D7 and OpenGL games, and is suitable for both game lovers and developers.

Warzone 2100 is a completely free and open-source RTS (real-time strategy) and RTT (real-time tactics) hybrid Red Alert like game for Windows, Mac and Linux platforms. It was developed by Pumpkin Studios (with C++) and published by Eidos Interactive in 1999.

When you first launched Minetest, didn't you think it was just Minecraft? Actually not. Although their interface, style, and gameplay are almost the same, Minetest is essentially a free, open-source and cross-platform voxel game engine (written in C++ and Lua, using the Irrlicht Engine). It was created by Perttu Ahola and first released in 2010, and is now developed by a team of volunteers, with significant contributions from the community. It's available for Linux-based systems, FreeBSD, Windows, Mac, and Android platforms, and provides an API for users to create their own games and mods written in Lua.

Soul Edge (ソウルエッジ) is a classic 3D fighting game based on the background of cold steel era, developed by Project Soul and produced by Namco in 1995. At the same time, it is also the maiden work of the entire Soulcalibur series (ソウルキャリバー シリーズ), also known as Soul series (ソウル シリーズ). In addition to pioneering a new game genre called 3D weapon combat, Soul Edge is also the first 3D FTG (fighting technology game) game to support horizontal movement design.

TeamSpeak is a very excellent free and cross-platform professional team VoIP (Voice over Internet Phone) communication application specially designed for online gamers around the world. It was developed by TeamSpeak Systems from Germany in 1999, and has become one of the most popular and renowned voice communication platforms for online games in the world.