To call this game "art" or even a "masterpiece" would be a disservice to just how perfect this video game experience is. It is the most high quality, perfected piece of media that exists, and you haven't truly lived until you've played it.
Version 3 edit: Gameplay-wise, version 3 is an improvement over version 2, with the added ability to maintain momentum whilst respawning, a feature I'm sure has come with the inclusion of LWJGL 3, however, the level design has really gone downhill in its newest release. Level 2 was completely replaced with a new level 2, and whilst the new mechanics are great, it will never live up to the high bar set by the original second level.