Phys-Box is the second project I started. It's a simple physics sandbox with gibbing objects, and explosives (and weapons when I wake up, it's 5:11am and I need to sleep desperately)
Sorry to post and run but here's the link:
Simply check the controls in section two of the included readme (it's html, I got bored).
When I wake up I will be implementing a pistol, and grenades. Right now the player has no use other than being there.
Credits to deadeye for the physics/platformer hybrid movement (I am going to expand on this for a fully bouncing player but that's for another time)
I will also soon be putting in basic zombies which will jump up small to medium ledges, push objects and attack the player (they won't push grenades away, because that would make grenades useless on zombies)
There is currently an unlisted bug; Explosive Barrels are highly unstable, and when two are placed on top of each other they tend to collide several times per second, causing them to explode with no apparent influence. I think this is due to the increased gravity, however I will be creating countermeasures to this soon.