Hotaru no Nikki - Hotaru no Nikki is an Adventure-based, Puzzle-Platform, and Single-player video developed by Nippon Ichi Games.
Clone Hero - Clone Hero is a free rhythm game, which can be played with any 5 or 6 button guitar controller...
WarriOrb - WarriOrb is a Side-scroll, Metroidvania, and Single-player Souls-like Platform video game developed by Not Yet and published by Maple Whispering Limited.
Osu - Osu is Music, Rhythm, Single and Multiplayer video game developed by Dean Herbert.
Timespinner - Timespinner is a Platform, Single-player, and Multiplayer Metroidvania video game developed by Lunar Ray Games for Multiple Platforms.
StepMania - Rhythm game for Windows, Mac, and Linux.