Sounds like a system performance issue to me. Although I'm not a hardware guru, I think generally a good graphics card plus more RAM will do the trick in running scenes faster. What are your system specs? It's also possible that all you need is to download the most current drivers for your graphics card to boost performance. For general tips on texture performance though, I don't make any textures bigger than they need to be(I generally stay around the 1024x1024 size), and I make use of tiling textures instead of creating giant textures for a large area.

Ok thank you. your szene runs very fluid with my system and it looks much better than some szen of others! This is the reason I ask :D I try to download new version of my drivers maby it helps :) I blender with my Asus laptop (yes a laptop :D) i5,2,8 GHz,Amd readon 7610M and 4Gb ram.

That seems strange then that you're having low frame rate issues, your systems pretty good. If you want, you can send me a blend file with a scene you made that runs slow for you. I could look it over and figure out why it's lagging and where we can optimize things for better performance. My email is contact@cgmasters.net.

Of course you can use this! It's released under CC 3.0 Attribution, meaning you can use it or even modify it however you want and for whatever you want, as long as you credit "Chris Plush at cgmasters.net" as the author. -Chris

A lot of the models and textures were created in an old training course of mine that's no longer available but I am working on a new game modeling and texturing course that should be out in about 2 months. -Chris

An easy way would be to give the ground a game property called "ground", and on the dynamic actor add logic bricks to detect if its colliding with the ground property AND the keyboard jump button is pressed, then connect it to a motion actuator with vertical force. I think some options have been added for jump but I actually haven't played much with the game engine in years, I'm unfortunately out of touch with any developments at this point so search around youtube for recent bge tutorials. -Chris

It might be a version conflict as this was tested in 2.71. Not sure how that would create flickering though, that sounds like more of a hardware issue though I'm not really sure. The mouse not working is probably due to scripts needing the line "import bge" at the top of them in the latest blender versions. There's also a new mouselook actuator which partially outdates some of the mouselook script in this blend. -Chris

Hmm, maybe I'm missing something. The scene uses the scale 1 blender unit = 1 foot and in that sense everything is scaled realistically(20ft building minus the roof, 5ft camera level, 3ft barrel, etc). Are you asking why I didn't set the measurement to imperial or metric in the scene properties? If that's the case then there's no real answer to that. -Chris

Open up the text editor window in Blender. Then from the header load in the mouselook.py script, scroll to the top and paste "import bge" without the quotes at the top. This should fix things. However this script is outdated now that there's a mouselook actuator in more recent versions of Blender. -Chris

Bingo! It worked very well...! Thx. for this tip ! :D however just a query, how do I make jumping & climbing. is there any script which can be added to this?

Sorry I'm not sure what the best ways are to do this anymore, it's been a long time since I've done any real bge game functionality. -Chris