Intermediate files are divided by type based on functionality. File types are distinguished by their extension.
Currently, the following intermediate files are defined.
| Extension | Content | |
| Model | .cmdl | Model data (CTR MoDeL data). Stores model information, including shapes, materials and bones. |
| Model Animations | cmdla | Model animation data (CTR MoDeL Animation data). Stores model, mesh Visibility animation. |
| Textures | .ctex | Texture data (CTR TEXture data). Stores texture image information. |
| Animation | .cskla | Skeletal animation data (CTR SKeLetal Animation data) Stores animation information that moves bone matrices. |
| .cmata | Material animation (CTR MATerial Animation data) | |
| Scenes | .ccam | Camera data. (CTR CAMera data). Stores camera information. |
| .clgt | Light data. (CTR LiGhT data). Stores light information. |
|
| .cenv | Scene environment data. (CTR ENVironment data). | |
| Particle | .cptl | Particle data. (CTR ParTicLe data). Not mentioned in this manual. |
CONFIDENTIAL