Just downloaded the demo yesterday. I tried it today, and...well, i was a little disappointed. The loading time took 15 minutes. First of all- why did you change the default keys to the arrow keys?
Most of the fps games use W/A/S/D keys these days, so you'll have to change them for the final version. Plus, it's much easier to handle physic based puzzles with those keys.
Heck, i've never played any FPS game using the arrow keys anyway...and it's a lot easier with W/A/S/D, but everyone has their own opinion of course. It would be cool to be able to change the control settings from the main menu, but sadly you can't do that in FPSC.
The framerate was quite bad too (about 5-12 all the time), but it was probadly because of the lightning and the massive amount of entities. (My specs: 2.93 Ghz Intel P4, 1024mb Ram, overclocked Ati X700 pro 256mb videocard)
I know i shouldn't expect this much for an FPSC game afterall; but you pushed the engine to it's limits. The sad truth is that no matter how fine and cool looking your game is, the engine FPSC uses can't handle it without lagging like hell. Also, if the loading time per one level will be as long in the final version, it's enough to scare some players away.
On the plus side though, no game ever created by FPSC has looked this cool. The music was pretty nice too, but the main menu music got boring after listening to it for 15 minutes.
Just wait till Riker 9 is released...then we will be able to create a lot better games with FPSC.
"ME SMASH YOU DOWN!"