Thank you for your suggestions, i have no experience...so need to learn a lot

I'm open to all kind of working together, if are any interested persons... by the way, on my site www.mdgamesoft i have also a forum........at beginning, normal....and for special discutions related to that game..maybe is possible to use that???
I still work to make nice explosions, i used sparks..but not working..........plugins problem...or....i didnt make corect all things.............so i need help. I'm sure can be a great geme, for instance if i use several levels, for instance second level in desert, third level in artics....and why not , a customize level.to insert your own level.....
an other thing is this : all objects are not solid...i can go through all objects. I used offcourse object collision on...but not working.............any ideas???
Mihai