Development-wise, I'm a total noob with T3D, but moderately experienced with other programmming languages and even some 3D game engines. I'm not implying that those issues listed below "don't work" in the engine, rather, I'm assuming that they are most likely to be attributed to my lack of knowledge of T3D. While in the past, I have occasionally attempted to start with T3D, but never got very far since life got in the way, I can now dedicate much more time to get to grips with it. I must say I'm pleased with all the options T3D has to offer, and even useful information / documentation can be found on (most) non-self-evident options. BTW: I own the three books by Ken Finney (yes they seriously overlap each other, I know ) and have more or less read diagonally through all of them over time. In the long run, I have three different projects in mind, basically scifi/fantasy-themed, with differing orientations towards action vs. rpg between them. But currently I'm running into a few quirks I can't find solutions to: 1) Probably an easy one: Where can I change the footstep sound in the desert template level ? Currently, it is a hard "clonk-clonk" as if the player were walking with metal boots on stone ground ? While I'm able to change the footstepsound for - say - Materials assigned to buildings, I can't seem to find an option for terrains. 2) The footstep sound on Materials can obviously be set with "Advanced options" in the material editor , only, more often than not, T3D seems to forget this setting ( and the impact sound setting also) from one moment to the other, or doesn't save them at all (yes, I confirmed the selected sound by pressing the Enter key and explicitly clicked the disk-symbol on the materials window). 3) sometimes, say : if located/spawned on top of large buildings, the player character suddenly develops a nasty habit of falling through ceilings, walls, and floors until he hits the ground, especially after reloads of the level in World Editor, and sometimes the game, too. I set the player drop sphere a littleabove the floor, so the player experiences a visible, tiny "fall" on respawn. Of course "player step on shape" is set, as well as "collision" being set to "shape"; the obnoxius behaviour can only be remedied by actually changing to "playing the game" once for a short time. The effect also occurs when I change some object settings of the building. The level is based on the empty desert level template. This also happens when I use the stock twin tower building of T3D. 4) I have a model "Aztec Maze Pyramid", acquired from a model shop on the web, originally in .x-Format, converted by me both to .dae as well as .dts using Milkshape and the latest dts+-Conversion plug-in (which seems to be working great for most of the other models I got from there). Now, with 8 stories/levels in the pyramid, even in broad desert daylight, the second level from the top should already be dark, let alone the deeper ones, but the whole interior of the pyramid is lit medium bright. If I play around with the sunlight settings, I can get some walls down to pitch black, but the walls on he opposite site and the ceilings remain medium brightly lit. In Milkshape, I have set "emissive", "spotlight" to "black", so, the material should not be responsible for that excess brightness. I can't seem to identify any parameter to get the interior as uniformly dark as it should be. 5) Setting the "cast shadows flag" with the sky/sun settings results in casting a circular shadow zone of ~20m perimeter around the player, which even moves with him. How can I remove that, and why is this happening at all, in the first place ? 6) Back to the pyramid: using point lights works pretty in the room where the light is located, only, those lights are shining through stone walls and ceilings ? Reducing the range of the light is not a good option, because then, the room doesn't receive enough light in its corners. Surely, there is a better way? Hardware employed is: Intel I7 on both machines, NVIDIA GTX780m / GTX 980m. 16 GB RAM (not using the built-in Intel 4xxxx Graphics Cards) on both Software employed is: WIN7Pro/WIN10Pro, T3D 3.10.1 binaries from the official WIKI pages, WIN and NVIDIA software on current patch level. (Currently, I'm still shying away from compiling the T3D binaries myself, because I'm still exploring the basics of T3D in all directions, and most things I need are working well. Also, I'm not sure which development branch to follow right now; I would even be willing to go down to a lower T3D Release if the said issues could be circumvented that way - well aware of the implied compromise on other functionality, that way). BTW: I also - along time ago - officially acquired the TAIK, the UAISDK and the RPG-Kit; I think they were meant for T3D 3.3. Are there any detailled instructions how to convert them to T3d 3.10.1 ? Thanks for your advice in advance.