This is a solid start to a game, in my humble opinion. The air bubble timer is challenging and pushes you, as the player, to keep moving, and I like the linking of pylons as a core transit mechanic.
That said…
- This is arguably personal preference, but I’m definitely a WASD child, myself. Having the primary controls sitting, instead, on the left side of the keyboard gets very uncomfortable. My arm actually got physically soar after a couple minutes.
- When I disconnect the pylons, it seems I have to walk away from them a little, then back again in order to be able to rotate the beam. Not horribly game breaking, but annoying enough, and it does eat a precious half second or so.