Aaaw, those dinos are cute! And I love that each of them has their own unique sprite and it's not just a recoloring.
Unfortunately my girlfriend tended to blow herself up so I was denied the enjoyment of killing her myself. Still, my impression is that the powerup density maybe should be a bit higher, at least in 2 player mode. At the moment it just seems a bit hard to deliberately kill another player. Also, maybe the fuse timer is a bit long? It felt like often, I was just standing around, waiting for something to happen.
Small nitpick: If you've placed a die and collect the bonus die powerup afterwards, you don't get to place the second die until the first one exploded.
Still, this is a very promising start and I do think with a bit of balancing, this could turn into a pretty fun party game!