Osu? Has a mode called Osu!Mania. https://osu.ppy.sh/home. Source: 12 months ago

You can play on osu! (it's free and has a Taiko mode too) and get the sounds here: Idol (TV Size) and Idol English Ver.. Source: about 1 year ago

There are currently 2 different rank leaderboards: one for the stable client and one for the lazer client. The osu! Website shows rankings of the stable client while lazers ingame profile viewer shows the rank you achieved in the lazer client using the osu!lazer website. There are fewer people playing osu!lazer than the stable version which is why your rank is higher. Source: over 1 year ago

(Also Elite Beat Agents/Osu! Tatake! Oendan! Are fuckin' great for any skill level, but if you don't feel like digging out your DS I'm just gonna shill the freeware clone osu! instead.). Source: over 1 year ago

IIRC OSU! Has remarkably low system requirements. Source: over 1 year ago

I played a PC game called "Osmos" (http://osmos-game.com/) like back in 2012 or so. It has all this electronic ambient music as the soundtrack. However, the soundtrack is not created for the game. Rather, the soundtrack is a selection of pre-existing tracks already produced by a few electronic music artists. The link above is one of my favorites. Source: almost 2 years ago

You can physically demonstrate orbit with some fabric stretched over a frame, but I really think video games are going to be your best friend here. Osmos (Free demo, $5 full) is a great starting point that uses simplified gravity in two dimensions. Orbit (Free app, $5 on Steam) is another, similar game to introduce orbit. Once you've graduated to three dimensions, Universe Sandbox ($30, $20 on GOG) will really... Source: almost 2 years ago