But there is also how games have aged over time. Some game mechanics still work and are fun.
I just recently bought "Populous" on steam for 2$. After learning how to use DosBox the game is still as addictive as it was on my Atari-STE ... but now I have bad old PC sound.
Compare this with "Command & Conquer Tiberium Wars" I should have skipped buying that. The conversion is so faithful that it still has the same stupid unit movements.