Playing Jazz on modern systems is as straightforward as firing up DOSBox. It works perfectly well (although the game has a <i>serious</i> case of screen tearing that I don’t believe happens on real hardware) and is the best way to play the game.
However, there is an open-source reimplementation of the game called OpenJazz, first released in 2005. It’s not bad, but the physics don’t feel quite the same as they should. Nevertheless, if you have trouble with Jazz’s short-sightedness, this might be worth a go so you can play at higher resolutions.
Frustratingly, you can scale the game up so the sprites don’t appear teeny-tiny; but it also applies one of those stupid pixel filters which you can’t turn off.
It’s a good effort, but something still feels off with the Jazz2 reimplementation. Particularly in terms of animations. I hope it goes far, though – would be nice to see Jazz 2 get a new lease of life.
OpenJazz had some bugs for me: could not save, load only worked from main menu, some jump pads looked like small black trees, and some missing tiles far below the level. Physics also seem a bit different, though close considering it’s not a source or reversed port.
Hard to go back to DOS engine though, view-port feels way too small.