Spelunky HD is just a better version of this game in every single way apart from the fact it has a level editor I guess, just play that one instead. That being said it's interesting to look back on and it's cool you can play it in your web browser.

Crack-cocaine made with pixels and bits.

Really fun and addicting game with some rough edges. I have yet to really sink my teeth into the HD remake or 2 yet but I have full confidence they will be the definitive experience for this really fun concept.

HD has better mouthfeel, by which i mean gamefeel.

After playing HD, there are some things that I noticed that I liked more in this game, like how spike pits seem a lot harder to deal with or the existence of the level editor.
However, the HD version still feels a lot more polished - but this is still not bad for a free game

GEEEEEEEEEEEEEEEEEEEEEEEK

Haha I'm older than this game

Just a prototype to something greater

Play Spelunky HD instead. Still a groundbreaking Roguelike.