Also, if you feel retro, here's a remake of an old game that I liked... Supaplex. It's free , and really damn difficult

http://www.oldgames.sk/en/game/megaplex/
My fastest PC has an i7-4770K, 16G DDR3, GTX 1060 6G, 250G SSD.
I suggest using Rocks 'n' Diamonds instead (download links).
Lol. My strongest PC has amd atholn x2 250.i7-4770K
In Rocks 'n' Diamonds, it is possible (via Setup -> Game & Menu) to change the Game Speed and allow skipping levels (turn off Handicap).
Let's see. The PC I'm currently using has...
Why XP? W7 should work just fine...OS: Windows XP SP 3, 32-bit
My desktop system has:
Yes, I very deliberately got that one.