42 providing temporary use of on-line non-downloadable software development tools for the design and development of computer and video games; providing temporary use of on-line non-downloadable software development tools for developing and designing virtual environments; providing temporary use of on-line non-downloadable software development tools for simulating lighting interactions with geometry and material surfaces; providing a web site featuring temporary use of on-line non-downloadable software development tools for the design and development of computer and video games; providing a web site featuring temporary use of on-line non-downloadable software development tools for developing and designing virtual environments; providing a web site featuring temporary use of on-line non-downloadable software development tools for simulating lighting interactions with geometry and material surfaces; providing temporary use of non-downloadable cloud-based software development tools for the design and development of computer and video games; providing temporary use of non-downloadable cloud-based software development tools for developing and designing virtual environments; providing temporary use of non-downloadable cloud-based software development tools for simulating lighting interactions with geometry and material surfaces;