Fuck, I looked through all of the games on that site, but I couldn't find the one I am looking for.
It was a 3d game, you were in some kind of airplane/spacecraft with weapons, point of view was from inside the ship. It didn't control like a plane, I think, more like a flying camera in spectator mode in fps's
The demo level I played had you chasing after and killing 4 or 5 targets, before you fly to a boss fight that was a giant snake that shoots fire, which was near a pyramid that I think you need to fly into an opening once you kill the cobra. The first target was something moving on the ground, I think it was blue, and if you didn't kill it, it would eventually reach and move over the ocean like it was solid ground.
There were several weapons, the most useless one being a thing that fires disks, very quickly, in the centre then in the corners of the screen. I remember it had limited ammo, fired quickly and fired in the same pattern every time. There was a big, nearly(?) stationary enemy that used the same disks, and dropped them when killed, but they had super accurate ones. The disks were black and yellow, I think. Possibly some brown on them too.
You were stuck on one planet, it was desert themed, with some oceans here and there. I remember you could fly straight in one direction, and because the planet was a sphere, you would come back to the same place you started.
There were powerups and things, you could find them by flying around on the planet.
It is about 10-15 years old, possibly older, I can't really narrow it down any further than that, unfortunately. It was on a computer, my grandfather sold them and introduced me to this game
