Nightmare Sphere (AKA: ナイトメアスフィア) is a free Castlevania-like and metroidvania-style doujin, indie game developed by 暁音♪ (AKA: n_sphere2, MickmanX, who used to be an art designer at Capcom) from Japan in 2009, using GameMaker Studio. It incorporates elements from classic 2D action video games like Metroid, Castlevania, Mega Man, and includes some degree of adult content.

Tekken (AKA: 鉄拳, Iron Fist) is a very classic 3D fighting game series for both arcade and home game consoles, developed and published by Namco from Japan. Its first work was produced in 1994, appeared only on the arcade console at first, and was later ported to home game consoles. As a hardcore fighting game, Tekken is extremely realistic and exciting no matter in action design or graphics rendering, thus occupying one important seat among all fighting games in the world all the time. As we all know, it even spawned comic books and movies.

Silverfall is an extremely excellent action & adventure RPG type of series of game works developed by Kyiv's Games and published by Monte Cristo from France. It used to be regarded as the landmark peak work in the field of European and American action role playing games, also had been honored as an offline edition of World of Warcraft by some A-RPG fans players around the world. Of course, you will soon find one fact that Silverfall made a lot of references from four very popular A-RPG game series at that time. They are: Diablo/Diablo 2, Dungeon Siege, Dungeons & Dragons, and Sacred.

Hyper Knights is a fast-paced and skill-based small action adventure game on Windows and Steam platforms. In game, players can experience the pleasant sensation similar to fighting with hundreds of thousands of enemies in a real battlefield in the middle ages of Europe.

After "Oriental Legend 2" sweeping over the arcade market, the high-profile classic action arcade game series derived another new work - Knights of Valour 2: New Legend (AKA: 三國戰紀II：横扫千军, 三國戰紀2：盖世英雄). It was released for PGM2 arcade system board by IGS in 2008, has no direct relations with the whole series of Knights of Valour 2 on PGM platform.